Optimal Privacy

content/optimal-privacy.md

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++++
+date = "2018-12-07T21:08:39-08:00"
+title = "Privacy is Consent (alt: On Optimal Privacy vs. System Efficiency)"
++++
+
+This fieldnote documents my notes with regards to a characterization of systems I've been calling "optimal privacy" but which intersects and overlaps with many other concepts in the literature e.g "privacy and computational complexity" or "approximate privacy".
+
+Starting with an observation, it is clear that privacy-preserving protocols are less efficient than non-privacy preserving protocols - that is to say that it seems that one must always communicate more to say less. (As far as I can tell, this observation was first made by Beaver[[1]](#1))
+
+This raises two interesting questions, what do we mean when we say we can compute a function privately and how does optimal-privacy relate to overall system efficiency?
+
+Beaver[[1]](#1), Chor[[2]](#2), Kushilevitz[[2]](#2)[[3]](#3) and others published much on this in the last 80s to early 90s and what follows below is a summary and rephrasing of their work.
+
+### What functions can be computed privately?
+
+Let's consider two parties Alice & Bob, who wish to compute a function $f(x,y)$ where $x$ is an input provided by Alice, and $y$ is an input provided by Bob.
+
+We note that Alice could simply send $x$ to Bob (or Bob could send $y$ to Alice) and the recipient would be able to computer the function keeping their input private. We however would like to explore ways such that both can compute the function while revealing as little as possible about their input.
+
+In the ideal case, what is generally referred to as *perfect-privacy* we would like to reveal only information that can be derived from either parties private input and the value of the function.
+
+While generally left unspecified in earlier papers on this subject, I want to explicitly add one additional constraint to the definition of a perfectly private protocol:
+
+* The information about the private inputs that is communicated, or that can be derived, as a result of the protocol should be symmetric for both parties
+
+Any function $f(x,y)$ can be reduced and written as a matrix $M$ where the the matrix coordinate $M(x,y) = f(x,y)$. As an example the following is a representation of an AND function, and an OR function:
+
+$$AND(x,y) = \begin{pmatrix}0 & 0\\\ 0 & 1\end{pmatrix}\,\,   OR(x,y) = \begin{pmatrix}0 & 1\\\ 1 & 1\end{pmatrix}$$
+
+Given this representation we can start to construct rules and intuition about which functions can be made to be privacy preserving and which cannot. 
+
+Trivially, any matrix which is insensitive to both $x$ and $y$ can be made privacy-preserving, e.g. $\forall x,y;$ $f(x,y) = 0$:
+
+$$f(x,y) = \begin{pmatrix}0 & 0 & \dots \\\ 0 & 0 & \dots \\\ \vdots & \vdots & \ddots \end{pmatrix}$$
+
+Given such a matrix, either party can communicate the value of the function without input from each other (because the value is constant).
+
+#### Partionable Functions
+
+It is perhaps clear at this point that in order to privately compute a non-trivial function we require each party to reveal some information about their input.
+
+Such information is necessary to *partition* the function into a smaller value space. Given enough information our goal is to partition the value space to produce a trivial matrix.
+
+As an example let's consider the function $f(x,y) = x + y\, mod \,2$, it has a function matrix as below:
+
+$$f(x,y) = \begin{pmatrix}0 & 1 & 0 & 1 & 0 & 1 & \dots \\\ 1 & 0 & 1 & 0 & 1 & 0 & \dots\\\ 0 & 1 & 0 & 1 & 0 & 1 & \dots\\\ 1 & 0 & 1 & 0 & 1 & 0 & \dots \\\ \vdots & \vdots & \vdots  & \vdots  & \vdots & \vdots & \ddots  \end{pmatrix}$$
+
+Such a function can be partitioned based on a single bit of information e.g. whether $y$ is divisible by 2:
+
+$$f(x,y) = \begin{pmatrix}1 & 1 & 1 & \dots\\\ 0 & 0 & 0 & \dots\\\ 1 & 1 & 1 & \dots \\\ 0 & 0 & 0 & \dots \\\ \vdots & \vdots & \vdots  & \vdots \ddots  \end{pmatrix}$$
+
+or not:
+
+$$f(x,y) = \begin{pmatrix}0 & 0 & 0 & \dots \\\ 1 & 1 & 1 & \dots\\\ 0 & 0 & 0 & \dots\\\ 1 & 1 & 1 & \dots \\\ \vdots & \vdots & \vdots  & \vdots \ddots  \end{pmatrix}$$
+
+We can partition each matrix again, based on whether $x$ is divisible by 2 or not. Regardless of which of the above partitioned matrices we start with, the resulting matrices are the same:
+
+$$f(x,y) = \begin{pmatrix}0 & 0 & 0 & \dots\\\ 0 & 0 & 0 & \dots\\\ \vdots  & \vdots & \vdots & \ddots  \end{pmatrix}$$
+
+$$f(x,y) = \begin{pmatrix}1 & 1 & 1 & \dots\\\ 1 & 1 & 1 & \dots \\\ \vdots & \vdots & \vdots & \ddots  \end{pmatrix}$$
+
+Both resulting matrices are constant and insensitive to any other information about $x$ or $y$. We have revealed the minimal amount of information necessary to compute the (admittedly rather simple) function.
+
+#### Non-partionable Functions
+
+Before we dive deeper into the above, it is worth pointing out that not all (in fact, the majority of) functions are partionable.
+
+Kushilevitz [[3]](#3) provides us with a definition of *forbidden matrices*, function matrices which cannot be partitioned. For the sake of clarity, I am going to use the term *non-partionable*.
+
+Intuitively, we cannot partition functions if there is no way to partition the input variable space in a way that cleanly partitions the output value space.
+
+In our above example, we could partition both input variables by the "divisible by 2" check. (Note that in this case we could have started with either $x$ or $y$ - that is we could partition by rows *or* by columns.)
+
+To understand why some functions are non-partitionable, let us start with looking at a concrete example of a function that is impossible to compute in a private manner, the AND function, defined over the input domain $[0,3)$:
+
+$$AND(x,y) = \begin{pmatrix}
+     0 & 0 & 0 & 0 \\\ 0 & 1 & 0 & 1 \\\ 0 & 0 & 1 & 1 \\\ 0 & 1 & 1 & 1
+\end{pmatrix}$$
+
+Observe how every row and column is unique - there is no bit of information that can be given that subdivides the matrix into (logical) discrete partitions.
+
+More formally, every potential input $x$ and $y$ is transitively related to every other input $x$ and $y$ respectively.
+
+That is to say that every $x$ ($x\_1$) shares a relation $ \sim$ with at least one other $x$ ($x\_2$) such that there exists a $y$ where $M\_{{x\_1}y} = M\_{{x\_2}y}$
+
+The equivalence relation $\equiv$ on the rows of the Matrix is defined as the transitive closure over $~$. That is, $x\_1 \equiv x\_2$ if there exist a set of $x\_i$ such that $ x\_1  \sim x\_{i\_1}  \sim x\_{i\_2}  \sim x\_{i\_3}  \sim \dots  \sim x\_2$ 
+
+A similar relation is defined over $y$ for the columns of the matrix.
+
+We can now see that if all the rows and all the columns of a submatrix are equivalent, there can be no way to partition the submatrix i.e. for any possible partition there will always be at least one output value that is shared by the input values of multiple partitions.
+
+(Recursively, a matrix cannot be partitioned if it contains a submatrix that cannot be partitioned.)
+
+Going back to our AND function, we can see that this is the case, even if we just consider submatrix for the input domain [0,1]
+
+For $y$:
+
+$$
+      f(0,0) \equiv f(0,1) = 0
+$$
+
+And for $x$:
+
+$$
+      f(0,0) \equiv f(1,0) = 0
+$$
+
+This means that there are no ways of partitioning the submatrix of the AND function without revealing all of $x$ and $y$ - thus it is impossible to compute AND between two parties in an information-theoretic private way (we will leave aside computing similar functions in the computational model of privacy until later)
+
+From the above we can also observe that functions with a unique output for every set of inputs can never be computed without revealing both sets of inputs i.e. in order to maintain privacy over the input variables of Alice & Bob the function output domain must be of lower order than the input domain.
+
+#### A Note on the Optimal Partitioning of Function Matrices
+
+This fieldnote will not dive into strategies for determining the optimal partition of a given function, but by now it may have occurred to you that "partitioning matrices" isn't exactly a trivial step. There are often multiple equivalent ways of partitioning certain functions, and both parties must agree on a given optimal partition and have a way of efficiently communicating which partition they are selecting during each round.
+
+### Additional Information & Privacy
+
+As we noted further up, we can achieve perfect privacy for any party by sacrificing the privacy of another. 
+
+We can therefore think of optimal-privacy as the goal of minimizing the amount of information either party must reveal about their inputs. 
+
+(Optimal) Privacy can be seen as a metafunction which takes in a function matrix and outputs the minimum amount of additional information necessary to resolve the function to an arbitrary value. Bar-Yehuda, Chor and Kushilevitz  [[4]](#4) proved tight bounds on the minimum amount of information that must be revealed for two-party functions.
+
+As an example, consider the following function:
+
+$$f(x,y) = \begin{cases} -1 & x = y  \\\ min(x,y) & x \neq y \end{cases}$$
+
+We can represent the function over the input domain [0,3] as follows:
+
+$$f(x,y) = \begin{pmatrix}
+     -1 & 0 & 0 & 0 \\\ 0 & -1 & 1 & 1 \\\ 0 & 1 & -1 & 2 \\\ 0 & 1 & 2 & -1
+\end{pmatrix}$$
+     
+We note that in the above function that at least one party always learns the others input (the minimum), and both parties reveal their input in the case that the number is the same. Because of this it can be tempting to think of such a function as not-perfectly private, however, per our definition above, it is.
+
+The matrix of the function above is partionable by revealing the most signficant bit of each input. Both Alice and Bob would take it in turns to reveal significant bits, each one would cut the value space in half.
+
+In some of the leaf nodes (e.g. if Alice chooses 2 or 3 and Bob chooses 0 or 1 as in the bottom left of the matrix, or vice versa in the top right) we see that the matrix decomposes into two monochrome submatrices allows the party with the maximum value to retain some privacy of their input.
+
+In others (as seen in the top left & bottom right), the matrices decompose in such a way that revealing the value, also reveals both inputs (either the values are equal, or through the process of eliminations there are no other values that either party could possess).
+
+Sadly, in the information-theoretic model, the number of functions that are defined in the input space for our metafunction is frustratingly limited. There are simply not that many interesting functions we can compute with perfect information-theoretic privacy.
+
+For more interesting metafunctions we are forced to make tradeoffs either by either limiting the computational power of parties (i.e. achieving privacy through the properties of certain cryptographical problems) or by accepting that we can only achieve *approximate* privacy.
+
+### The Millionaires Problem
+
+Alice and Bob wish to know which one of them is richer, without revealing their wealth. They construct the following function:
+
+ $$f(x,y) = \begin{cases} 0 & x \geq y  \\\ 1 & x \lt y \\\ \end{cases}$$
+ 
+Note that the above breaks ties in favor of Alice. This forms the following function matrix:
+
+$$f(x,y) = \begin{pmatrix}
+      0 & 1 & 1 & 1 & \dots \\\ 0 & 0 & 1 & 1 & \dots\\\ 0 & 0 & 0 & 1 & \dots \\\ \vdots & \vdots & \vdots & \vdots & \ddots \\\ 
+\end{pmatrix}$$
+
+Such a function matrix is non-partitionable, as every submatrix along the diagonal is non-partionable, as such perfect privacy is impossible.
+
+The Bisection Protocol (as defined by Feigenbaum et al [[5]](#5)) provides good privacy in the average case. Much like the strategy for the $min(x,y)$ based function above we can bit-by-bit compare the most significant bit of each of the parties inputs, and stop once the outputs from the parties differ.
+
+The bisection protocol applied to the millionaires problem is optimally-private in respect to the party with the least amount of money: in addition to learning the most significant bit at which their wealth differs from the richer party, they also (by way of their private input) learn the lower and upper bounds on the difference of their wealth and the richer party, i.e. they learn the input of the wealthier party is the interval $\[2^{n-k}, 2^n\)$ where $k$ is the index of the most significant bit where both inputs differ. In contrast, the wealthier party only learns that the other has an input in the interval in the interval $\[0, 2^{n-k}\)$
+
+More clearly stated, the information revealed to each party by the protocol is asymmetric.
+
+Further, the greater the difference of two inputs, the greater the asymmetry. Consider the, worst case, example where Alice has $2^n$ wealth (the maximum possible), and Bob has $0$.
+
+In the first comparison of the Bisection Protocol, Alice will learn that they have the most wealth (thus they have computed the function), and will additionally learn that Bob's wealth is in the interval $\[0, 2^{n-1}\)$. Bob will also learn that Alice has more wealth, but will also learn that Alice's wealth is the interval $\[2^{n-1}, 2^n\)$.
+
+In comparison to the case where Alice and Bob have the same wealth (or near the same wealth), the protocol runs for longer and the information asymmetry approaches 0 (however this trend runs inverse to the total amount of system information both parties gain).
+
+At this point, it is worth explicitly noting that we can greatly improve the privacy of a protocol to compute the millionaires problem if we can limit the computational power of both parties (See Yao [[6]](#6)). (This also relies on the assumption that one-way functions exist)
+
+In the case of the millionaires problem, we can use Oblivious Transfer to evaluate the inputs of a Garbled Circuit, in addition to numerous other protocols. Such protocols will ensure that each party learns only the value of the function (under the limited computational power & one-way functions assumptions).
+
+### Communication Efficiency, Privacy & Consent
+
+We have finally reached the point in this fieldnote where we can start considering the second question: how does achieving optimal-privacy relate to the overall communication efficiency of the system?
+
+Regardless of whether a function can be computed with perfect-privacy (or the assumptions made about computational power) the communication complexity of the number of rounds associated with the optimally private computation is dramatically more that a non-private computation.
+
+As an example, a non-private computation of the millionaires problem can be computed with a **single** round of communication (where each party transmits once). The bisection protocol requires *at-least* one round of communication, and at worst $n$ rounds of communication ($n = \log_{2}N$ where $N$ is the maximum value of the input domain). The simplest oblivious transfer protocol [[7]](#7) on the other hand requires $1.5$ rounds to transmit a single bit (thus requires $1.5 \cdot n$ rounds of communication, not including the communication required to setup the garbled circuit).
+
+We have to engage in much more conversation, to transmit less information.
+
+More formally, we know that if a function can be computed perfectly private it can be computed in at worst $2 \cdot 2^n$ rounds (See [[1]](#1)), we also know that we can trade additional information for improvements on communication complexity ([[4]](#4) - that is, we can sacrifice privacy to gain efficiency. We can choose to give up more information about our (private) inputs to improve the efficiency of the system.
+
+Thus we hit upon a philosophical notion of the nature of privacy & consent. Consent is the degree to which you are willing to reveal additional information to improve the efficiency of a system. Privacy is the degree to which you are unwilling to reveal additional information. Privacy and Consent are poles on the same spectrum. Privacy is negative consent, Consent is negative privacy.
+
+**Privacy is Consent**
+
+
+
+
+# References
+
+<div id="1"/>
+1. Beaver, Donald. Perfect privacy for two-party protocols. Harvard University, Center for Research in Computing Technology, Aiken Computation Laboratory, 1989.
+<div id="2"/>
+2. Chor, Benny, and Eyal Kushilevitz. "A zero-one law for boolean privacy." SIAM Journal on Discrete Mathematics 4.1 (1991): 36-47.
+<div id="3"/>
+3. Kushelvitz, Eyal. "Privacy and communication complexity." SIAM Journal on Discrete Mathematics 5.2 (1992): 273-284.
+<div id="4"/>
+4. R. Bar-Yehuda, B. Chor, E. Kushilevitz and A. Orlitsky, "Privacy, additional information and communication," in IEEE Transactions on Information Theory, vol. 39, no. 6, pp. 1930-1943, Nov. 1993. doi: 10.1109/18.265501
+<div id="5"/>
+5. Feigenbaum, Joan, Aaron D. Jaggard, and Michael Schapira. "Approximate privacy: foundations and quantification." Proceedings of the 11th ACM conference on Electronic commerce. ACM, 2010.
+<div id="6"/>
+6. A. C. Yao, "Protocols for secure computations," 23rd Annual Symposium on Foundations of Computer Science (sfcs 1982)(FOCS), vol. 00, no. , pp. 160-164, 1982.
+doi:10.1109/SFCS.1982.88
+<div id="7"/>
+7. Chou, Tung, and Claudio Orlandi. "The simplest protocol for oblivious transfer." International Conference on Cryptology and Information Security in Latin America. Springer, Cham, 2015.

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themes/blueberry/static/js/MathJax-2.7.5/.travis.yml

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+language: node_js
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+script:
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themes/blueberry/static/js/MathJax-2.7.5/CONTRIBUTING.md

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+# Contributing to MathJax
+
+You are interested in giving us a hand? That's awesome! We've put together some brief guidelines that should help you get started quickly and easily.
+
+There are lots and lots of ways to get involved, this document covers:
+
+* [reporting an issue](#reporting-an-issue)
+    * [bug reports](#bug-reports)
+    * [feature requests](#feature-requests)
+    * [change requests](#change-requests)
+* [working on MathJax core](#working-on-mathjax-core)
+    * [key branches and tags](#key-branches--tags)
+    * [submitting pull requests](#submitting-pull-requests)
+    * [testing and quality assurance](#testing-and-quality-assurance)
+    * [writing documentation](#writing-documentation)
+    * [translation](#translation)
+* [Conduct](#conduct)
+
+
+## Reporting An Issue
+
+If you're about to raise an issue because you think you've found a
+problem with MathJax, or you'd like to make a request for a new
+feature in the codebase, or any other reason… please read this first.
+
+The GitHub issue tracker is the preferred channel for [bug reports](#bug-reports),
+[feature requests](#feature-requests), [change requests](#change-requests) and [submitting pull
+requests](#submitting-pull-requests), but please respect the following restrictions:
+
+* Please **search for existing issues**. Help us keep duplicate issues
+  to a minimum by checking to see if someone has already reported your
+  problem or requested your idea.
+
+* Please **do not** use the issue tracker for personal support
+  requests (use [the MathJax User Group](https://groups.google.com/forum/#!forum/mathjax-users)).
+
+* Please **be civil**. Keep the discussion on topic and respect the
+  opinions of others. See also our [Conduct Guidelines](#conduct)
+
+### Bug Reports
+
+A bug is a _demonstrable problem_ that is caused by the code in the repository.
+Good bug reports are extremely helpful - thank you!
+
+Guidelines for bug reports:
+
+1. **Use the GitHub issue search** — check if the issue has already been
+   reported.
+
+2. **Check if the issue has been fixed** — look for [closed issues in the
+   current milestone](https://github.com/MathJax/MathJax/issues?&page=1&state=closed) or try to reproduce it
+   using the latest `develop` branch. Please note that we only pack MathJax for releases, so on the `develop` branch you have to use `/unpacked/MathJax.js` etc. to test.
+
+3. **Share a live sample of the problem** — without a live page it is usually impossible to debug problems; see also the Bug Report Template below.
+
+4. **Isolate the problem** — a live sample is a starting point but if you want to speed things up create a [reduced test
+   case](http://css-tricks.com/6263-reduced-test-cases/). Be specific about your setup (browser, OS versions etc). Use services like [jsbin](http://jsbin.com), [CodePen](http://codepen.io), [JSfiddle](http://jsfiddle.com) to make collaboration on minimal test cases easier for everyone. Use the unpacked copy of MathJax (`[...]/unpacked/MathJax.js` etc.) for better debugging.
+
+5. **Include a screenshot/cast as a last resort** — Is your issue about a layout
+   or design feature / bug but hard to reproduce or isolate? Then please provide a screenshot or screencast. Tools like [LICEcap](http://www.cockos.com/licecap/) or [SauceLabs](http://www.saucelabs.com) allow you to quickly and easily record a screencasts. Make it an animated gif, embed it directly into your GitHub issue -- kapow!
+
+6. Use the Bug Report template below or [click this
+   link](https://github.com/MathJax/MathJax/issues/new?title=Bug%3A&body=%23%23%23%20Issue%20Summary%0A%0A%23%23%23%20Steps%20to%20Reproduce%0A%0A1.%20This%20is%20the%20first%20step%0A%0AThis%20is%20a%20bug%20because...%0A%0A%23%23%23%20Technical%20details%0A%0A*%20MathJax%20Version%3A%20master%20-%20latest%20commit%3A%20%20INSERT%20COMMIT%20REF%0A*%20Client%20OS%3A%20%0A*%20Browser%3A%20%0A*%20)
+   to start creating a bug report with the template automatically.
+
+A good bug report shouldn't leave others needing to chase you up for
+more information. Be sure to include the details of your environment.
+
+Here is a [real example](https://github.com/mathjax/MathJax/issues/820)
+
+Template Example ([click to use](https://github.com/MathJax/MathJax/issues/new?title=Bug%3A&body=%23%23%23%20Issue%20Summary%0A%0A%23%23%23%20Steps%20to%20Reproduce%0A%0A1.%20This%20is%20the%20first%20step%0A%0AThis%20is%20a%20bug%20because...%0A%0A%23%23%23%20Technical%20details%0A%0A*%20MathJax%20Version%3A%20master%20-%20latest%20commit%3A%20%20INSERT%20COMMIT%20REF%0A*%20Client%20OS%3A%20%0A*%20Browser%3A%20%0A*%20)):
+```
+Short and descriptive example bug report title
+
+### Issue Summary
+
+A summary of the issue and the browser/OS environment in which it occurs. If
+suitable, include the steps required to reproduce the bug.
+
+### Steps to Reproduce
+
+1. This is the first step
+2. This is the second step
+3. Further steps, etc.
+
+Any other information you want to share that is relevant to the issue
+being reported. Especially, why do you consider this to be a bug? What
+do you expect to happen instead?
+
+### Technical details:
+
+* MathJax Version: 2.3 (latest commit: f3aaf3a2a3e964df2770dc4aaaa9c87ce5f47e2c)
+* Client OS: Mac OS X 10.8.4
+* Browser: Chrome 29.0.1547.57
+```
+
+
+### Feature Requests
+
+Feature requests are welcome. Before you submit one be sure to have:
+
+1. Read the
+   [Roadmaps](https://github.com/mathjax/MathJax/wiki/Mathjax-roadmap),
+   **use the GitHub search** and check the feature hasn't already been
+   requested.
+2. Take a moment to think about whether your idea fits with the scope
+   and aims of the project, or if it might better fit being a [custom
+   extension](https://github.com/mathjax/MathJax-third-party-extensions).
+3. Remember, it's up to *you* to make a strong case to convince the
+   project's leaders of the merits of this feature. Please provide as
+   much detail and context as possible, this means explaining the use
+   case and why it is likely to be common.
+4. Clearly indicate whether this is a feature request for MathJax
+   core, input & output jax, or extensions.
+
+
+### Change Requests
+
+Change requests cover both architectural and functional changes to how
+MathJax works. If you have an idea for a new or different dependency,
+a refactor, or an improvement to a feature, etc - please be sure to:
+
+1. **Use the GitHub search** and check someone else didn't get there first
+2. Take a moment to think about the best way to make a case for, and
+   explain what you're thinking. Are you sure this shouldn't really be
+   a [bug report](#bug-reports) or a [feature
+   request](#feature-requests)?  Is it really one idea or is it many?
+   What's the context? What problem are you solving? Why is what you
+   are suggesting better than what's already there? Does it fit with
+   the Roadmap?
+
+## Working on MathJax core
+
+You want to contribute code? Fantastic! Let's get you started.
+
+### Key Branches & Tags
+
+To get it out of the way:
+
+- **[develop](https://github.com/MathJax/MathJax/tree/develop)** is
+  the development branch. All work on the next release happens here so
+  you should generally branch off `develop`. Do **NOT** use this branch
+  for a production site. 
+- **[master](https://github.com/MathJax/MathJax)** contains the latest
+  release of MathJax. This branch may be used in production. Do 
+  **NOT** use this branch to work on MathJax's source.
+
+### Submitting Pull Requests
+
+Pull requests are awesome. If you're looking to raise a PR for
+something which doesn't have an open issue, please think carefully
+about [raising an issue](#reporting-an-issue) which your PR can close,
+especially if you're fixing a bug. This makes it more likely that
+there will be enough information available for your PR to be properly
+tested and merged.
+
+##### Need Help?
+
+If you're not completely clear on how to submit / update / *do* Pull
+Requests, please check out our [source control
+policies](https://github.com/mathjax/MathJax/wiki/Source-control-policies). For
+more insights, chech the excellent in depth [Git Workflow
+guide](https://github.com/TryGhost/Ghost/wiki/Git-Workflow) from
+Ghost, in particular
+
+* [Ghost Workflow guide: commit messages](https://github.com/TryGhost/Ghost/wiki/Git-workflow#commit-messages)
+
+### Testing and Quality Assurance
+
+Never underestimate just how useful quality assurance is. If you're
+looking to get involved with the code base and don't know where to
+start, checking out and testing a pull request is one of the most
+useful things you could do.
+
+If you want to get involved with testing MathJax, there is a set of QA
+Documentation [in our testing
+framework](https://github.com/MathJax/MathJax-test).
+
+Essentially though, [check out the latest develop
+branch](#working-on-mathJax-core), take it for a spin, and if you find
+anything odd, please follow the [bug report guidelines](#bug-reports)
+and let us know!
+
+#### Checking out a Pull Request
+
+These are some [excellent
+instructions](https://gist.github.com/piscisaureus/3342247) on
+configuring your GitHub repository to allow you to checkout pull
+requests in the same way as branches:
+<https://gist.github.com/piscisaureus/3342247>.
+
+
+### Writing documentation
+
+MathJax's main documentation can be found at [docs.mathjax.org](http://docs.mathjax.org).
+The source of the docs is hosted in the
+[mathjax/mathjax-docs](http://github.com/mathjax/mathjax-docs) repo here on GitHub.
+
+The documentation is generated using [Sphinx-doc](http://sphinx-doc.org/) and hosted on 
+[Read the docs](http://readthedocs.org).
+You can clone the repo and submit pull requests following the
+[pull-request](#submitting-pull-requests) guidelines.
+
+
+### Translation
+
+If you wish to add or update translations of MathJax, please do it on
+[TranslateWiki.net](https://translatewiki.net/w/i.php?title=Special:Translate&group=out-mathjax-0-all)
+(and while you're there you can help other open source projects,
+too, because you're awesome!).
+
+For bug reports and other questions that don't fit on
+TranslateWiki.net, head over to the
+[mathjax/mathjax-i18n](https://github.com/mathjax/MathJax-i18n)
+repository.
+
+## Conduct
+
+We are committed to providing a friendly, safe and welcoming environment for
+all, regardless of gender, sexual orientation, disability, ethnicity, religion,
+or similar personal characteristic.
+
+Please be kind and courteous. There's no need to be mean or rude.
+Respect that people have differences of opinion and that every design or
+implementation choice carries a trade-off and numerous costs. There is seldom
+a right answer, merely an optimal answer given a set of values and
+circumstances.
+
+Please keep unstructured critique to a minimum. If you have solid ideas you
+want to experiment with, make a fork and see how it works.
+
+We will exclude you from interaction if you insult, demean or harass anyone.
+That is not welcome behaviour. We interpret the term "harassment" as
+including the definition in the
+[Citizen Code of Conduct](http://citizencodeofconduct.org/);
+if you have any lack of clarity about what might be included in that concept,
+please read their definition. In particular, we don't tolerate behavior that
+excludes people in socially marginalized groups.
+
+Private harassment is also unacceptable. No matter who you are, if you feel
+you have been or are being harassed or made uncomfortable by a community
+member, please contact one of the channel ops or any of the
+[MathJax](https://github.com/MathJax/MathJax) core team
+immediately. Whether you're a regular contributor or a newcomer, we care about
+making this community a safe place for you and we've got your back.
+
+Likewise any spamming, trolling, flaming, baiting or other attention-stealing
+behaviour is not welcome.
+
+We also suggest to read [discourse's
+rules](http://blog.discourse.org/2013/03/the-universal-rules-of-civilized-discourse/)
+
+## References
+
+* We heavily borrowed from Mozilla and Ghost -- thank you!
+  * https://github.com/TryGhost/Ghost/blob/master/CONTRIBUTING.md
+  * https://github.com/mozilla/rust/wiki/Note-development-policy
+* https://github.com/jden/CONTRIBUTING.md/blob/master/CONTRIBUTING.md
+* http://blog.discourse.org/2013/03/the-universal-rules-of-civilized-discourse/

themes/blueberry/static/js/MathJax-2.7.5/LICENSE

@@ -0,0 +1,202 @@
+
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themes/blueberry/static/js/MathJax-2.7.5/README.md

@@ -0,0 +1,53 @@
+# MathJax
+
+## Beautiful math in all browsers
+
+MathJax is an open-source JavaScript display engine for LaTeX, MathML, and
+AsciiMath notation that works in all modern browsers.  It was designed with
+the goal of consolidating the recent advances in web technologies into a
+single, definitive, math-on-the-web platform supporting the major browsers
+and operating systems.  It requires no setup on the part of the user (no
+plugins to download or software to install), so the page author can write
+web documents that include mathematics and be confident that users will be
+able to view it naturally and easily.  Simply include MathJax and some
+mathematics in a web page, and MathJax does the rest.
+
+Some of the main features of MathJax include:
+
+- High-quality display of LaTeX, MathML, and AsciiMath notation in HTML pages
+
+- Supported in most browsers with no plug-ins, extra fonts, or special
+  setup for the reader
+
+- Easy for authors, flexible for publishers, extensible for developers
+
+- Supports math accessibility, cut-and-paste interoperability, and other
+  advanced functionality
+
+- Powerful API for integration with other web applications
+
+See <http://www.mathjax.org/> for additional details.
+
+
+## Installation and Usage
+
+The MathJax installation and usage documentation is available in a
+separate GitHub repository at <https://github.com/mathjax/mathjax-docs>.
+The HTML versions can now be viewed at <http://docs.mathjax.org/>, 
+where it is possible for you to submit corrections and modifications
+directly to the documentation on line.
+
+
+## Community
+
+The main MathJax website is <http://www.mathjax.org>, and it includes
+announcements and other important information.  MathJax is maintained and
+distributed on GitHub at <http://github.com/mathjax/MathJax>.  A user forum
+for asking questions and getting assistance is hosted at Google, and the
+bug tracker is hosted at GitHub:
+
+Bug tracker:         <https://github.com/mathjax/MathJax/issues>  
+MathJax-Users Group: <http://groups.google.com/group/mathjax-users>
+
+Before reporting a bug, please check that it has not already been reported.
+Also, please use the bug tracker for reporting bugs rather than the help forum.

themes/blueberry/static/js/MathJax-2.7.5/bower.json

@@ -0,0 +1,11 @@
+{
+  "name": "MathJax",
+  "main": "./MathJax.js",
+  "homepage": "http://www.mathjax.org/",
+  "ignore": [
+    "**/.*",
+    "node_modules",
+    "components"
+  ],
+  "keywords": ["math", "js", "LaTeX", "MathML", "AsciiMath"]
+}

themes/blueberry/static/js/MathJax-2.7.5/composer.json

@@ -0,0 +1,14 @@
+{
+    "name": "mathjax/mathjax",
+    "type": "library",
+    "description": "MathJax is an open-source JavaScript display engine for LaTeX, MathML, and AsciiMath notation that works in all modern browsers.",
+    "keywords": ["math", "js", "LaTeX", "MathML", "AsciiMath"],
+    "homepage": "http://www.mathjax.org/",
+    "license": "Apache-2.0",
+    "authors": [
+        {
+            "name": "MathJax Consortium",
+            "homepage": "https://github.com/mathjax"
+        }
+    ]
+}

themes/blueberry/static/js/MathJax-2.7.5/config/MMLorHTML.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/config/MMLorHTML.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+(function(c,g){var f="2.7.0";var a=MathJax.Hub.CombineConfig("MMLorHTML",{prefer:{MSIE:"MML",Firefox:"HTML",Opera:"HTML",Chrome:"HTML",Safari:"HTML",other:"HTML"}});var e={Firefox:3,Opera:9.52,MSIE:6,Chrome:0.3,Safari:2,Konqueror:4};var b=(g.version==="0.0"||g.versionAtLeast(e[g]||0));var d=(g.isFirefox&&g.versionAtLeast("1.5"))||(g.isMSIE&&g.hasMathPlayer)||(g.isSafari&&g.versionAtLeast("5.0"))||(g.isOpera&&g.versionAtLeast("9.52"));c.Register.StartupHook("End Config",function(){var h=(a.prefer&&typeof(a.prefer)==="object"?a.prefer[MathJax.Hub.Browser]||a.prefer.other||"HTML":a.prefer);if(b||d){if(d&&(h==="MML"||!b)){if(MathJax.OutputJax.NativeMML){MathJax.OutputJax.NativeMML.Register("jax/mml")}else{c.config.jax.unshift("output/NativeMML")}c.Startup.signal.Post("NativeMML output selected")}else{if(MathJax.OutputJax["HTML-CSS"]){MathJax.OutputJax["HTML-CSS"].Register("jax/mml")}else{c.config.jax.unshift("output/HTML-CSS")}c.Startup.signal.Post("HTML-CSS output selected")}}else{c.PreProcess.disabled=true;c.prepareScripts.disabled=true;MathJax.Message.Set(["MathJaxNotSupported","Your browser does not support MathJax"],null,4000);c.Startup.signal.Post("MathJax not supported")}})})(MathJax.Hub,MathJax.Hub.Browser);MathJax.Ajax.loadComplete("[MathJax]/config/MMLorHTML.js");

themes/blueberry/static/js/MathJax-2.7.5/config/Safe.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/config/Safe.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Hub.Register.StartupHook("End Config",function(){if(!MathJax.Hub.config.extensions){MathJax.Hub.config.extensions=[]}MathJax.Hub.config.extensions.push("Safe.js")});MathJax.Ajax.loadComplete("[MathJax]/config/Safe.js");

themes/blueberry/static/js/MathJax-2.7.5/config/local/local.js

@@ -0,0 +1,40 @@
+/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+
+/*************************************************************
+ *
+ *  MathJax/config/local/local.js
+ *  
+ *  Include changes and configuration local to your installation
+ *  in this file.  For example, common macros can be defined here
+ *  (see below).  To use this file, add "local/local.js" to the
+ *  config array in MathJax.js or your MathJax.Hub.Config() call.
+ *
+ *  ---------------------------------------------------------------------
+ *  
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ * 
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+
+MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
+  var TEX = MathJax.InputJax.TeX;
+
+  // place macros here.  E.g.:
+  //   TEX.Macro("R","{\\bf R}");
+  //   TEX.Macro("op","\\mathop{\\rm #1}",1); // a macro with 1 parameter
+  
+});
+
+MathJax.Ajax.loadComplete("[MathJax]/config/local/local.js");

themes/blueberry/static/js/MathJax-2.7.5/docs/README.txt

@@ -0,0 +1,11 @@
+The source files for the documentation are now kept in a separate
+GitHub repository at
+
+       https://github.com/mathjax/mathjax-docs
+
+The HTML versions are now available at
+
+       http://docs.mathjax.org/
+
+where it is possible for you to submit corrections and modifications
+directly to the documentation on line.

themes/blueberry/static/js/MathJax-2.7.5/docs/html/index.html

@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html>
+<head>
+<title>MathJax Documentation</title>
+</head>
+<body>
+
+<p>
+The source files for the documentation are now kept in a separate
+GitHub repository at
+</p>
+<p style="text-indent:3em">
+<a href="https://github.com/mathjax/mathjax-docs">https://github.com/mathjax/mathjax-docs</a>
+</p>
+
+<p>
+The HTML versions are now available at
+</p>
+<p style="text-indent:3em">
+<a href="http://docs.mathjax.org/">http://docs.mathjax.org/</a>
+</p>
+<p>
+where it is possible for you to submit corrections and modifications
+directly to the documentation on line.
+</p>
+</body>
+</html>

themes/blueberry/static/js/MathJax-2.7.5/docs/source/README.txt

@@ -0,0 +1,11 @@
+The source files for the documentation are now kept in a separate
+GitHub repository at
+
+       https://github.com/mathjax/mathjax-docs
+
+The HTML versions are now available at
+
+       http://docs.mathjax.org/
+
+where it is possible for you to submit corrections and modifications
+directly to the documentation on line.

themes/blueberry/static/js/MathJax-2.7.5/extensions/CHTML-preview.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/CHTML-preview.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Callback.Queue(["Require",MathJax.Ajax,"[MathJax]/extensions/fast-preview.js"],["loadComplete",MathJax.Ajax,"[MathJax]/extensions/CHTML-preview.js"]);

themes/blueberry/static/js/MathJax-2.7.5/extensions/HTML-CSS/handle-floats.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/HTML-CSS/handle-floats.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["HTML-CSS/handle-floats"]={version:"2.7.5"};MathJax.Hub.Startup.signal.Post("HTML-CSS handle-floats Ready");MathJax.Ajax.loadComplete("[MathJax]/extensions/HTML-CSS/handle-floats.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/HTML.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/HTML.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/HTML"]={version:"2.7.5"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var b=MathJax.InputJax.TeX;var a=b.Definitions;a.Add({macros:{href:"HREF_attribute","class":"CLASS_attribute",style:"STYLE_attribute",cssId:"ID_attribute"}},null,true);b.Parse.Augment({HREF_attribute:function(e){var d=this.GetArgument(e),c=this.GetArgumentMML(e);this.Push(c.With({href:d}))},CLASS_attribute:function(d){var e=this.GetArgument(d),c=this.GetArgumentMML(d);if(c["class"]!=null){e=c["class"]+" "+e}this.Push(c.With({"class":e}))},STYLE_attribute:function(d){var e=this.GetArgument(d),c=this.GetArgumentMML(d);if(c.style!=null){if(e.charAt(e.length-1)!==";"){e+=";"}e=c.style+" "+e}this.Push(c.With({style:e}))},ID_attribute:function(e){var d=this.GetArgument(e),c=this.GetArgumentMML(e);this.Push(c.With({id:d}))},GetArgumentMML:function(d){var c=this.ParseArg(d);if(c.inferred&&c.data.length==1){c=c.data[0]}else{delete c.inferred}return c}});MathJax.Hub.Startup.signal.Post("TeX HTML Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/HTML.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/action.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/action.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/action"]={version:"2.7.5"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var b=MathJax.InputJax.TeX,a=MathJax.ElementJax.mml;b.Definitions.Add({macros:{toggle:"Toggle",mathtip:"Mathtip",texttip:["Macro","\\mathtip{#1}{\\text{#2}}",2]}},null,true);b.Parse.Augment({Toggle:function(d){var e=[],c;while((c=this.GetArgument(d))!=="\\endtoggle"){e.push(b.Parse(c,this.stack.env).mml())}this.Push(a.maction.apply(a,e).With({actiontype:a.ACTIONTYPE.TOGGLE}))},Mathtip:function(d){var c=this.ParseArg(d),e=this.ParseArg(d);this.Push(a.maction(c,e).With({actiontype:a.ACTIONTYPE.TOOLTIP}))}});MathJax.Hub.Startup.signal.Post("TeX action Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/action.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/autobold.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/autobold.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/autobold"]={version:"2.7.5"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var a=MathJax.InputJax.TeX;a.prefilterHooks.Add(function(d){var c=d.script.parentNode.insertBefore(document.createElement("span"),d.script);c.visibility="hidden";c.style.fontFamily="Times, serif";c.appendChild(document.createTextNode("ABCXYZabcxyz"));var b=c.offsetWidth;c.style.fontWeight="bold";if(b&&c.offsetWidth===b){d.math="\\boldsymbol{"+d.math+"}"}c.parentNode.removeChild(c)});MathJax.Hub.Startup.signal.Post("TeX autobold Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/autobold.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/autoload-all.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/autoload-all.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/autoload-all"]={version:"2.7.5"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var h={action:["mathtip","texttip","toggle"],AMSmath:["mathring","nobreakspace","negmedspace","negthickspace","intI","iiiint","idotsint","dddot","ddddot","sideset","boxed","substack","injlim","projlim","varliminf","varlimsup","varinjlim","varprojlim","DeclareMathOperator","operatorname","genfrac","tfrac","dfrac","binom","tbinom","dbinom","cfrac","shoveleft","shoveright","xrightarrow","xleftarrow"],begingroup:["begingroup","endgroup","gdef","global"],cancel:["cancel","bcancel","xcancel","cancelto"],color:["color","textcolor","colorbox","fcolorbox","definecolor"],enclose:["enclose"],extpfeil:["Newextarrow","xlongequal","xmapsto","xtofrom","xtwoheadleftarrow","xtwoheadrightarrow"],mhchem:["ce","cee","cf"]};var c={AMSmath:["subarray","smallmatrix","equation","equation*"],AMScd:["CD"]};var d,g,b,a={macros:{},environment:{}};for(d in h){if(h.hasOwnProperty(d)){if(!MathJax.Extension["TeX/"+d]){var f=h[d];for(g=0,b=f.length;g<b;g++){a.macros[f[g]]=["Extension",d]}}}}for(d in c){if(c.hasOwnProperty(d)){if(!MathJax.Extension["TeX/"+d]){var e=c[d];for(g=0,b=e.length;g<b;g++){a.environment[e[g]]=["ExtensionEnv",null,d]}}}}MathJax.InputJax.TeX.Definitions.Add(a);MathJax.Hub.Startup.signal.Post("TeX autoload-all Ready")});MathJax.Callback.Queue(["Require",MathJax.Ajax,"[MathJax]/extensions/TeX/AMSsymbols.js"],["loadComplete",MathJax.Ajax,"[MathJax]/extensions/TeX/autoload-all.js"]);

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/bbox.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/bbox.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/bbox"]={version:"2.7.5"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var b=MathJax.InputJax.TeX,a=MathJax.ElementJax.mml;b.Definitions.Add({macros:{bbox:"BBox"}},null,true);b.Parse.Augment({BBox:function(e){var p=this.GetBrackets(e,""),o=this.ParseArg(e);var k=p.split(/,/),g,d,c;for(var l=0,j=k.length;l<j;l++){var f=k[l].replace(/^\s+/,"").replace(/\s+$/,"");var n=f.match(/^(\.\d+|\d+(\.\d*)?)(pt|em|ex|mu|px|in|cm|mm)$/);if(n){if(g){b.Error(["MultipleBBoxProperty","%1 specified twice in %2","Padding",e])}var h=this.BBoxPadding(n[1]+n[3]);if(h){g={height:"+"+h,depth:"+"+h,lspace:h,width:"+"+(2*n[1])+n[3]}}}else{if(f.match(/^([a-z0-9]+|\#[0-9a-f]{6}|\#[0-9a-f]{3})$/i)){if(d){b.Error(["MultipleBBoxProperty","%1 specified twice in %2","Background",e])}d=f}else{if(f.match(/^[-a-z]+:/i)){if(c){b.Error(["MultipleBBoxProperty","%1 specified twice in %2","Style",e])}c=this.BBoxStyle(f)}else{if(f!==""){b.Error(["InvalidBBoxProperty","'%1' doesn't look like a color, a padding dimension, or a style",f])}}}}}if(g){o=a.mpadded(o).With(g)}if(d||c){o=a.mstyle(o).With({mathbackground:d,style:c})}this.Push(o)},BBoxStyle:function(c){return c},BBoxPadding:function(c){return c}});MathJax.Hub.Startup.signal.Post("TeX bbox Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/bbox.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/boldsymbol.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/boldsymbol.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/boldsymbol"]={version:"2.7.5"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var a=MathJax.ElementJax.mml;var d=MathJax.InputJax.TeX;var b=d.Definitions;var c={};c[a.VARIANT.NORMAL]=a.VARIANT.BOLD;c[a.VARIANT.ITALIC]=a.VARIANT.BOLDITALIC;c[a.VARIANT.FRAKTUR]=a.VARIANT.BOLDFRAKTUR;c[a.VARIANT.SCRIPT]=a.VARIANT.BOLDSCRIPT;c[a.VARIANT.SANSSERIF]=a.VARIANT.BOLDSANSSERIF;c["-tex-caligraphic"]="-tex-caligraphic-bold";c["-tex-oldstyle"]="-tex-oldstyle-bold";b.Add({macros:{boldsymbol:"Boldsymbol"}},null,true);d.Parse.Augment({mmlToken:function(f){if(this.stack.env.boldsymbol){var e=f.Get("mathvariant");if(e==null){f.mathvariant=a.VARIANT.BOLD}else{f.mathvariant=(c[e]||e)}}return f},Boldsymbol:function(h){var e=this.stack.env.boldsymbol,f=this.stack.env.font;this.stack.env.boldsymbol=true;this.stack.env.font=null;var g=this.ParseArg(h);this.stack.env.font=f;this.stack.env.boldsymbol=e;this.Push(g)}});MathJax.Hub.Startup.signal.Post("TeX boldsymbol Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/boldsymbol.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/cancel.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/cancel.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/cancel"]={version:"2.7.5",ALLOWED:{color:1,mathcolor:1,background:1,mathbackground:1,padding:1,thickness:1}};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var c=MathJax.InputJax.TeX,a=MathJax.ElementJax.mml,b=MathJax.Extension["TeX/cancel"];b.setAttributes=function(h,e){if(e!==""){e=e.replace(/ /g,"").split(/,/);for(var g=0,d=e.length;g<d;g++){var f=e[g].split(/[:=]/);if(b.ALLOWED[f[0]]){if(f[1]==="true"){f[1]=true}if(f[1]==="false"){f[1]=false}h[f[0]]=f[1]}}}return h};c.Definitions.Add({macros:{cancel:["Cancel",a.NOTATION.UPDIAGONALSTRIKE],bcancel:["Cancel",a.NOTATION.DOWNDIAGONALSTRIKE],xcancel:["Cancel",a.NOTATION.UPDIAGONALSTRIKE+" "+a.NOTATION.DOWNDIAGONALSTRIKE],cancelto:"CancelTo"}},null,true);c.Parse.Augment({Cancel:function(e,g){var d=this.GetBrackets(e,""),f=this.ParseArg(e);var h=b.setAttributes({notation:g},d);this.Push(a.menclose(f).With(h))},CancelTo:function(e,g){var i=this.ParseArg(e),d=this.GetBrackets(e,""),f=this.ParseArg(e);var h=b.setAttributes({notation:a.NOTATION.UPDIAGONALSTRIKE+" "+a.NOTATION.UPDIAGONALARROW},d);i=a.mpadded(i).With({depth:"-.1em",height:"+.1em",voffset:".1em"});this.Push(a.msup(a.menclose(f).With(h),i))}});MathJax.Hub.Startup.signal.Post("TeX cancel Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/cancel.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/enclose.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/enclose.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/enclose"]={version:"2.7.5",ALLOWED:{arrow:1,color:1,mathcolor:1,background:1,mathbackground:1,padding:1,thickness:1}};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var c=MathJax.InputJax.TeX,a=MathJax.ElementJax.mml,b=MathJax.Extension["TeX/enclose"].ALLOWED;c.Definitions.Add({macros:{enclose:"Enclose"}},null,true);c.Parse.Augment({Enclose:function(g){var k=this.GetArgument(g),e=this.GetBrackets(g),j=this.ParseArg(g);var l={notation:k.replace(/,/g," ")};if(e){e=e.replace(/ /g,"").split(/,/);for(var h=0,d=e.length;h<d;h++){var f=e[h].split(/[:=]/);if(b[f[0]]){f[1]=f[1].replace(/^"(.*)"$/,"$1");if(f[1]==="true"){f[1]=true}if(f[1]==="false"){f[1]=false}if(f[0]==="arrow"&&f[1]){l.notation=l.notation+" updiagonalarrow"}else{l[f[0]]=f[1]}}}}this.Push(a.menclose(j).With(l))}});MathJax.Hub.Startup.signal.Post("TeX enclose Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/enclose.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/extpfeil.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/extpfeil.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/extpfeil"]={version:"2.7.5"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var b=MathJax.InputJax.TeX,a=b.Definitions;a.Add({macros:{xtwoheadrightarrow:["Extension","AMSmath"],xtwoheadleftarrow:["Extension","AMSmath"],xmapsto:["Extension","AMSmath"],xlongequal:["Extension","AMSmath"],xtofrom:["Extension","AMSmath"],Newextarrow:["Extension","AMSmath"]}},null,true);MathJax.Hub.Register.StartupHook("TeX AMSmath Ready",function(){MathJax.Hub.Insert(a,{macros:{xtwoheadrightarrow:["xArrow",8608,12,16],xtwoheadleftarrow:["xArrow",8606,17,13],xmapsto:["xArrow",8614,6,7],xlongequal:["xArrow",61,7,7],xtofrom:["xArrow",8644,12,12],Newextarrow:"NewExtArrow"}})});b.Parse.Augment({NewExtArrow:function(c){var e=this.GetArgument(c),f=this.GetArgument(c),d=this.GetArgument(c);if(!e.match(/^\\([a-z]+|.)$/i)){b.Error(["NewextarrowArg1","First argument to %1 must be a control sequence name",c])}if(!f.match(/^(\d+),(\d+)$/)){b.Error(["NewextarrowArg2","Second argument to %1 must be two integers separated by a comma",c])}if(!d.match(/^(\d+|0x[0-9A-F]+)$/i)){b.Error(["NewextarrowArg3","Third argument to %1 must be a unicode character number",c])}e=e.substr(1);f=f.split(",");d=parseInt(d);this.setDef(e,["xArrow",d,parseInt(f[0]),parseInt(f[1])])}});MathJax.Hub.Startup.signal.Post("TeX extpfeil Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/extpfeil.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/mathchoice.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/mathchoice.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var c="2.7.5";var a=MathJax.ElementJax.mml;var d=MathJax.InputJax.TeX;var b=d.Definitions;b.Add({macros:{mathchoice:"MathChoice"}},null,true);d.Parse.Augment({MathChoice:function(f){var i=this.ParseArg(f),e=this.ParseArg(f),g=this.ParseArg(f),h=this.ParseArg(f);this.Push(a.TeXmathchoice(i,e,g,h))}});a.TeXmathchoice=a.mbase.Subclass({type:"TeXmathchoice",notParent:true,choice:function(){if(this.selection!=null){return this.selection}if(this.choosing){return 2}this.choosing=true;var f=0,e=this.getValues("displaystyle","scriptlevel");if(e.scriptlevel>0){f=Math.min(3,e.scriptlevel+1)}else{f=(e.displaystyle?0:1)}var g=this.inherit;while(g&&g.type!=="math"){g=g.inherit}if(g){this.selection=f}this.choosing=false;return f},selected:function(){return this.data[this.choice()]},setTeXclass:function(e){return this.selected().setTeXclass(e)},isSpacelike:function(){return this.selected().isSpacelike()},isEmbellished:function(){return this.selected().isEmbellished()},Core:function(){return this.selected()},CoreMO:function(){return this.selected().CoreMO()},toHTML:function(e){e=this.HTMLcreateSpan(e);e.bbox=this.Core().toHTML(e).bbox;if(e.firstChild&&e.firstChild.style.marginLeft){e.style.marginLeft=e.firstChild.style.marginLeft;e.firstChild.style.marginLeft=""}return e},toSVG:function(){var e=this.Core().toSVG();this.SVGsaveData(e);return e},toCommonHTML:function(e){e=this.CHTMLcreateNode(e);this.CHTMLhandleStyle(e);this.CHTMLhandleColor(e);this.CHTMLaddChild(e,this.choice(),{});return e},toPreviewHTML:function(e){e=this.PHTMLcreateSpan(e);this.PHTMLhandleStyle(e);this.PHTMLhandleColor(e);this.PHTMLaddChild(e,this.choice(),{});return e}});MathJax.Hub.Startup.signal.Post("TeX mathchoice Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/mathchoice.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/mhchem3/mhchem.js

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+/*************************************************************
+ *
+ *  MathJax/extensions/TeX/mhchem.js
+ *
+ *  Implements the \ce command for handling chemical formulas
+ *  from the mhchem LaTeX package.
+ *
+ *  ---------------------------------------------------------------------
+ *
+ *  Copyright (c) 2011-2015 The MathJax Consortium
+ *  Copyright (c) 2015-2017 Martin Hensel
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
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+null,!0)}),n.Parse.Augment({CE:
+function(n){var t=this.GetArgument(n),o=r(t).Parse();this.string=o+this.string.substr(this.i),this.i=0},PU:
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+

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/noUndefined.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/noUndefined.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/noUndefined"]={version:"2.7.5",config:MathJax.Hub.CombineConfig("TeX.noUndefined",{disabled:false,attributes:{mathcolor:"red"}})};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var b=MathJax.Extension["TeX/noUndefined"].config;var a=MathJax.ElementJax.mml;var c=MathJax.InputJax.TeX.Parse.prototype.csUndefined;MathJax.InputJax.TeX.Parse.Augment({csUndefined:function(d){if(b.disabled){return c.apply(this,arguments)}MathJax.Hub.signal.Post(["TeX Jax - undefined control sequence",d]);this.Push(a.mtext(d).With(b.attributes))}});MathJax.Hub.Startup.signal.Post("TeX noUndefined Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/noUndefined.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/TeX/verb.js

@@ -0,0 +1,19 @@
+/*
+ *  /MathJax/extensions/TeX/verb.js
+ *
+ *  Copyright (c) 2009-2018 The MathJax Consortium
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/verb"]={version:"2.7.5"};MathJax.Hub.Register.StartupHook("TeX Jax Ready",function(){var a=MathJax.ElementJax.mml;var c=MathJax.InputJax.TeX;var b=c.Definitions;b.Add({macros:{verb:"Verb"}},null,true);c.Parse.Augment({Verb:function(d){var g=this.GetNext();var f=++this.i;if(g==""){c.Error(["MissingArgFor","Missing argument for %1",d])}while(this.i<this.string.length&&this.string.charAt(this.i)!=g){this.i++}if(this.i==this.string.length){c.Error(["NoClosingDelim","Can't find closing delimiter for %1",d])}var e=this.string.slice(f,this.i).replace(/ /g,"\u00A0");this.i++;this.Push(a.mtext(e).With({mathvariant:a.VARIANT.MONOSPACE}))}});MathJax.Hub.Startup.signal.Post("TeX verb Ready")});MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/verb.js");

themes/blueberry/static/js/MathJax-2.7.5/extensions/a11y/mathmaps/en/functions/algebra.js

@@ -0,0 +1 @@
+[{"locale":"en"},{"category":"Algebra","mappings":{"default":{"default":"degree"}},"key":"deg","names":["deg"]},{"category":"Algebra","mappings":{"default":{"default":"determinant","short":"det"}},"key":"det","names":["det"]},{"category":"Algebra","mappings":{"default":{"default":"dimension"}},"key":"dim","names":["dim"]},{"category":"Algebra","mappings":{"default":{"default":"homomorphism","short":"hom"}},"key":"hom","names":["hom","Hom"]},{"category":"Algebra","mappings":{"default":{"default":"kernel"}},"key":"ker","names":["ker"]},{"category":"Algebra","mappings":{"default":{"default":"trace"}},"key":"Tr","names":["Tr","tr"]}]

themes/blueberry/static/js/MathJax-2.7.5/extensions/a11y/mathmaps/en/functions/trigonometry.js

@@ -0,0 +1 @@
+[{"locale":"en"},{"category":"Trigonometric","mappings":{"default":{"default":"cosine function","short":"cosine"}},"key":"cos","names":["cos","cosine"]},{"category":"Trigonometric","mappings":{"default":{"default":"cotangent function","short":"cotangent"}},"key":"cot","names":["cot"]},{"category":"Trigonometric","mappings":{"default":{"default":"cosecant function","short":"cosecant"}},"key":"csc","names":["csc"]},{"category":"Trigonometric","mappings":{"default":{"default":"secant function","short":"secant"}},"key":"sec","names":["sec"]},{"category":"Trigonometric","mappings":{"default":{"default":"sine function","alternative":"sine function","short":"sine"}},"key":"sin","names":["sin","sine"]},{"category":"Trigonometric","mappings":{"default":{"default":"tangent function","short":"tangent"}},"key":"tan","names":["tan"]},{"category":"Cyclometric","mappings":{"default":{"default":"inverse cosine function","alternative":"arc cosine function","short":"arc cosine"}},"key":"arccos","names":["arccos"]},{"category":"Cyclometric","mappings":{"default":{"default":"inverse cotangent function","alternative":"arc cotangent function","short":"arc cotangent"}},"key":"arccot","names":["arccot"]},{"category":"Cyclometric","mappings":{"default":{"default":"inverse cosecant function","alternative":"arc cosecant function","short":"arc cosecant"}},"key":"arccsc","names":["arccsc"]},{"category":"Cyclometric","mappings":{"default":{"default":"inverse secant function","alternative":"arc secant function","short":"arc secant"}},"key":"arcsec","names":["arcsec"]},{"category":"Cyclometric","mappings":{"default":{"default":"inverse sine function","alternative":"arc sine function","short":"arc sine"}},"key":"arcsin","names":["arcsin"]},{"category":"Cyclometric","mappings":{"default":{"default":"inverse tangent function","alternative":"arc tangent function","short":"arc tangent"}},"key":"arctan","names":["arctan"]}]