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60 votes
Accepted

Why image cannot be used for explaining my maths problem?

This is largely an accessibility issue. Images are not searchable. Whatever you think of the quality of the built-in search engine, or external tools such as approach0, and their ability to find ...
Xander Henderson's user avatar
46 votes
Accepted

Can I post a 'homework' question without any MathJax/Latex.

Please do your best to write this up using MathJax. This makes your post much more readable, searchable, and accessible. If you're worried about the process of formatting it in MathJax taking too much ...
KReiser's user avatar
  • 66.8k
33 votes
Accepted

Why do the numbers on Math SE show in an ugly way when not using MathJax?

Maths SE uses the font Georgia for ordinary text (not MathJax), as this post says. This typeface has both ascenders and descenders, such as the numbers 3, 4, 5, 7, 9, and in the numbers 6 and 8. This ...
Toby Mak's user avatar
  • 16.9k
32 votes

Would you be interested in an automatic TeX bot?

I think this would be a very difficult task. In the unambiguous cases, adding math formatting doesn't add much value to the post. Added value begins where the math formatting clarifies math which is ...
MvG's user avatar
  • 42.9k
30 votes

MathJax basic tutorial and quick reference

Displaystyle and Textstyle Many things like fractions, sums, limits, and integrals display differently when written inline versus in a displayed formula. You can switch styles back and forth with <...
30 votes

Can I post a 'homework' question without any MathJax/Latex.

I want to amplify, perhaps a little more kindly, on @TonyK's "you're just being lazy" answer. Everyone answering your questions is volunteering their time, in trade for silly internet "...
John Hughes's user avatar
  • 94.2k
29 votes

The scope of \newcommand is the entire page

It pains me to break this thread by fixing the issue, but here we are. :) We are now inserting \begingroup and \endgroup ...
Adam Lear's user avatar
  • 100
29 votes

MathJax basic tutorial and quick reference

Equation numbering Simple equation To give an equation a number, use the \tag{}. To refer to it later, use \label{} to label ...
29 votes
Accepted

Can one use Stack Exchange to render mathematical equations for personal use?

As long as you don't submit the post, I don't see any harm in using the preview functionality of Stack Exchange to test your LaTeX code. But see Concerns about MathJax in proposed new SE editor – at ...
Glorfindel's user avatar
  • 3,965
28 votes

MathJax basic tutorial and quick reference

Vertical Spacing Some formulas such as $\overline a+\overline b=\overline {a\cdot b}$, $\sqrt{a}-\sqrt{b}$, do not look quite right when it comes to vertical spacing. Fortunately, there is more than ...
27 votes

When is it ok to use \newcommand and \DeclareMathOperator?

I don't think there exist general guidelines. However there are some characteristics of this site and of MathJax that together suggest, at least to me, a certain set of rules: The relevant ...
celtschk's user avatar
  • 43.6k
26 votes

How to search for a formula/expression

See my side-project, it is an open-source math-aware similarity search engine. http://approach0.xyz I am hoping someone interested can join and form a community to push this project forward, this is ...
Wei Zhong's user avatar
  • 457
26 votes

How can I write backslash in MathJax?

Use \setminus for the result $𝐿(𝐴)\setminus𝐿(𝐵)$.
Arnaud Mortier's user avatar
26 votes

Short and helpful advice on using MathJax on the site ...

The goal of this post is to outline the absolute basics of how to typeset mathematics using MathJax, without any prior knowledge assumed. Introduction: when asking and answering questions, it makes ...
Joe's user avatar
  • 20.1k
25 votes
Accepted

How can I draw a tree like this?

It can be done in MathJax, but it is painful and a complete hack. Here is one way: ...
Davide Cervone's user avatar
25 votes

How to deal with users that just won't use MathJax?

Don't read their stuff. Downvote if need be.
Ron Gordon's user avatar
  • 139k
25 votes
Accepted

How can I write roman numbers in MathJax?

Do you mean \mathrm{IX} perhaps? $\mathrm{IX}$? There's a reason why the font family is called "Roman".
Asaf Karagila's user avatar
  • 396k
24 votes

How to properly align a fitch style proof on Math Exchange?

Another option is to use the align environment \begin{align*}...\end{align*}, rather than the array environment. This environment has more flexibility with spacing, ...
user1729's user avatar
  • 31.3k
23 votes
Accepted

Should Math SE support MathJax on its own server?

After all, it's little compared to the amount of data in StackExchange itself. Yes, you're right; Stack Exchange wouldn't notice if they need to serve an additional library like this. However, one ...
Glorfindel's user avatar
  • 3,965
23 votes
Accepted

Adding MathJax to the title of posts being edited - bad habit?

Editing is encouraged!, in particular to clarify the meaning of a post without changing it A good title is an essential part of the question, and the first thing that people see. Your examples (“...
Martin R's user avatar
  • 116k
22 votes
Accepted

How to write plus-minus sign in MathJax?

You can use $$ \pm $$ or $$ \mp $$ That is \pm or \mp
Thomas's user avatar
  • 43.8k
22 votes

How can I write backslash in MathJax?

Here's a list of possible solutions that I could come up with (includes a curated Detexify output), the first two are the other two current answers: $L(A)\backslash L(B)$ ...
Calvin Khor's user avatar
22 votes
Accepted

Can I make this little table of diagrams better than ASCII graphics?

In your special case we can get away with the built-in \triangledown to represent the lines connecting each vertex. We can also make use of ...
TheSimpliFire's user avatar
  • 27.1k
21 votes
Accepted

How to make bold greek letters in Mathjax on Stackexchange?

Like this $\boldsymbol{\alpha}$ $\boldsymbol{\alpha}$ For comparison a regular one $\alpha$
quid's user avatar
  • 42.3k
21 votes
Accepted

How can I write backslash in MathJax?

If you want a real backslash, and not something spaced like a binary operation, use L(A)\backslash L(B) to get $$ L(A) \backslash L(B) $$
GEdgar's user avatar
  • 113k
20 votes

MathJax basic tutorial and quick reference

Linear programming Formulation A theoretical LPP can be typeset as ...
20 votes

Can I post a 'homework' question without any MathJax/Latex.

I rarely bother to read handwritten questions, especially if I'm on my phone. As others have said, we strongly encourage you to post your questions using MathJax, for a variety of reasons. We ...
PM 2Ring's user avatar
  • 4,948
19 votes

MathJax basic tutorial and quick reference

Units While $\LaTeX$ has packages that format units, MathJax does not. For visual consistency, one should format units within the same string of MathJax code as the value to which it corresponds, ...
19 votes
Accepted

MathJax CDN (cdn.mathjax.org) will be shutting down

We are aware of the shutdown. We are looking at alternatives including self hosting and cdnjs. I'm sad to see this wonderful service provided the MathJax Consortium cannot be maintained by ...
Geoff Dalgas's user avatar
19 votes

How do I change Math Renderer for MathJax?

Here is a formula which you can use for testing: $$x^2+y^2=z^2.$$ The MathJax contextual menu contains various items; after you bring up the menu, you can go to Math Settings → Math Renderer and then ...

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