51

$\newcommand{\E}{\mathrm{E}}$ $\newcommand{\Var}{\mathrm{Var}}$ $\newcommand{\Cov}{\mathrm{Cov}}$ $\newcommand{\Expect}{{\rm I\kern-.3em E}}$ Here is cardinal's solution. At the beginning of your answer type. $\newcommand{\E}{\mathrm{E}}$ $\newcommand{\Var}{\mathrm{Var}}$ $\newcommand{\Cov}{\mathrm{Cov}}$ After that, just use it. For example: $$ \...


26

In short: I think that the bottom-line is that in terms of correlations, there is not a clear effect. It differs per user, and if we would scale the number of equations by the size of the post then actually the post scores become lower for more equations. To see if there are causal effects one might still do some alternative experiments, but the ...


19

Here are some options that I know of: There is a CV help page for the markdown options that the site supports. That covers things like italics, and some (but very little) actual $\LaTeX$. There is a comprehensive 'tutorial' thread on meta.Mathematics here: MathJax basic tutorial and quick reference. One way to learn is to find something that uses $\...


19

To typeset an operator, it is much better to use \operatorname instead of \mathrm, as explained on tex.SE: What's the difference between \mathrm and \operatorname? Compare (first line uses \mathrm, second line uses \operatorname): $$\mathrm{Var}[x] + 2\mathrm{Var}[y] - \mathrm{E}[x]\mathrm{E}[y]$$ $$\operatorname{Var}[x] + 2\operatorname{Var}[y] - \...


16

While the MathJax/LaTeX table formatting is nice, it's a lot of work. I would not ask anyone to do it as a matter of routine. The added value is small, despite the prettier appearance. If we spend a lot of time making perfect tables, fewer posts will be edited. Better several readable posts than one perfect one. In this instance, I think best is the ...


15

For Corr, Cov and Var I usually use \DeclareMathOperator{\Corr}{Corr}, which, done once in an answer, allows me to just write \Corr(X,Y) whenever I need it later, which displays: $$\DeclareMathOperator{\Corr}{Corr} \Corr(X,Y)$$ Like Amoeba's answer, this ensures spacing is done correctly in a way that \mathrm doesn't. But see newcommand vs. ...


14

I would like to express an active preference for the "code format" tables over Latex ones in most circumstances, particularly if the table has been aligned properly. The ease of copying tables of data into a spreadsheet or script for further analysis or graphing is a huge advantage and something I regularly make use of. I have occasionally had to copy Latex ...


11

This rendering occurred because: In one of your MathJax statements, a $ was left out at the beginning, so there was an odd number of $ meaning that most of your comment was interpreted as MathJax and rendered as such. Your use of markdown for the link was also incorrect. The correct syntax is [text description](http://yourlink.com). I have edited the ...


9

Looks okay to me... maybe the MathJax rendering doesn't finish loading on your machine for some reason. Mine show as off-center for a brief moment before they look like this.


9

I don't think \begin{table} has ever worked on the SE system. (There is a relevant thread on meta.SE from 2009 here: Why can't table markup elements be used?) I don't believe it is supported by Mathjax. To make a "table" in $\LaTeX$ / Mathjax on the SE sites that support it, use \begin{array}{}... \end{array}. I have an example here: DF for regression SS ...


8

As pointed by Peter and amoeba, there is an issue with Safari 10.1. This question has come up on other stackexchange sites, see https://meta.mathoverflow.net/questions/3207/mathjax-accents-in-safari-10-1#3207 https://physics.meta.stackexchange.com/questions/9780/mathjax-shifted-frames Update by @amoeba, Aug 8: This seems to be resolved, both github ...


8

One thing to keep in mind is that a hack to produce a visual version of the symbol may well be a problem for the visually challenged, who may be using screen readers or other assistive technology, or those with dyslexia whose screen readers read each symbol separately with background highlighting. Hacks like superimposing two \perp symbols will cause ...


8

The help on editing lists some circumstances in which it's okay to edit posts (i.e. questions and answers). These include: To fix grammar and spelling mistakes To clarify the meaning of the post (without changing that meaning) The first suggests that typos should probably be fixed, and the second clarifies that we must be careful to preserve the intent. ...


7

I think you have to use unicode within the $\LaTeX$ code: $ {\bf \unicode[Times]{x3B1}} $ $ {\bf \unicode[Times]{x3B2}} $ $ {\bf \unicode[Times]{x3B3}} $ will result in $ {\bf \unicode[Times]{x3B1}} $ $ {\bf \unicode[Times]{x3B2}} $ $ {\bf \unicode[Times]{x3B3}} $ See the Wikipedia page for the Greek Alphabet for the unicode for ...


7

As cardinal notes in his answer, the problem is caused by an extremely long MathJax expression that exceeds the normal width of the comment area. Normally, MathJax does allow excessively long expressions to be broken over multiple lines, but that requires the expressions to actually contain some "natural" breakpoints such as commas or math operators. If it'...


6

Unless there is some way to write HTML code to generate an image (which would seem like too much trouble to me anyway), you need to make a figure and upload it. Any software tool that will let you create a figure and output it to a supported file type, e.g., .png, can be used. For what it's worth, I find using the tools in PowerPoint convenient for that ...


5

Edits which change the technical content of someone else's question should be avoided, even if a part of the subject is not correct. This is because the edit could be the question's answer (or part of it). One thing to do in this situation is to leave a comment to the OP pointing out what should be edited/clarified. See the following Meta Stack Exchange ...


5

Here's one possible cause of the problem. MathJax.org have paid to host a content delivery network (CDN) to make it easier for people to host MathJax pages (at cdn.mathjax.org). However, cloudflare have increased the cost of doing this to them and MathJax have decided to focus their resources on development. Consequently, as recommended by MathJax and as ...


5

An alternative to Glen_b's approach is to use \unicode{x2030} ($\unicode{x2030}$), but that relies on the reader having local fonts installed that contain the character, and so may not show up for some, and may produce different results for different people.


4

Would $^0\!\!/\!_{00}$ be close enough?


4

I wish to address the general question of fabricating unusual $\TeX$ symbols. $\newcommand{\ConditionallyIndependent}[3]{#1 \perp\kern-5pt \perp #2 \mid #3}$ The workaround The lack of a $\TeX$ symbol for your preferred notation is a strong indication that your notation is not well known. At a minimum, then, please define and explain your notation on or ...


4

Is $A\perp\kern-5pt\perp B \mid C$ good enough for your purposes? It's a slight kludge (A\perp\kern-5pt\perp B \mid C) but it looks okay to me; if you just need something for CV I'd think that would suffice.


3

What about $$ A \,\bot\, B \mid C $$ using A \,\bot\, B \mid C? I recommend this Wikipedia article for the glossary of symbols + $\TeX$ symbols.


2

There is this recent (June/13) news from mathjax.org: Stack Exchange continues as MathJax Partner posted by Peter Krautzberger. They appreciate Cross Validated SE feedback and the following news excerpts reinforce the advices given by @cardinal and @Abby to ask for support (feature-request) directly to MathJax team: Stack Exchange continues its support as a ...


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