11
votes

Accepted

### A MathJax/LaTeX question

You need to vertically center the symbol on the math axis: \mathop{\vcenter{\Huge\times}}
$$
[0,2] \times \left[0,4-\sqrt{3}\right] \times \left[0,4-\sqrt{3}\right] ...

8
votes

Accepted

### Writing a bar on top of a number

To give the question an answer so it can be accepted: you can use $\overline{...}$ to get a bar over any letter or digit or group thereof.

6
votes

Accepted

### Why do `* *`s and `** **`s stop being recognised at some point, and how can I fix the resulting inadvertent vandalism?

The post "HTML comments break formatting from that point" on Meta Stack Exchange mentions that problems can be caused by an incorrectly entered HTML comment
...

5
votes

Accepted

### MathJax ignores a `\tag` in an `{equation}` containing a `{split}`

This was fixed in version 2.7.8 of MathJax, but StackExchange is still using version 2.7.5 (and the highest version 2 release is 2.7.9). I understand not moving to version 3, but I don't know why SE ...

4
votes

Accepted

### Why would an equation render on preview and in an external TeX compiler, but not in post?

This is a CW answer - for experimenting.
Here is the equation copy-pasted from the (current revision of the) post:
$$ U_n = M\left(c-\frac{1}{n+2}\right)-M\left(c-\frac{1}{n+1}\right)\label{1}\tag{$U$}...

Community wiki

3
votes

Accepted

### How is it possible to format a right-aligned sequence that has single and double digits so that the alignment is correct?

The way you are supposed to use alignment environments like aligned, cases, align, etc., is ...

1
vote

### Editor is not rendering the equations correctly

I can't reproduce the problem. The following renders as expected for me, also in preview:
presheaves on $Top$ denoted by $p:\mathcal{F}\rightarrow C\mathcal{F}$ such that $i_0^*\circ p = id$ and $i_1^...

1
vote

### How is it possible to format a right-aligned sequence that has single and double digits so that the alignment is correct?

Try & and \phantom{0}:
...

1
vote

### Why do `* *`s and `** **`s stop being recognised at some point, and how can I fix the resulting inadvertent vandalism?

A sandbox for testing. If you update this, please update the indented block as well as the non-indented block.
...

1
vote

### `\intertext` in MathJax

Reply to @LSpice 's comment: (Sorry, I don't have enough rep to comment, so posted as answer)
I tested your example in mathml tester in Firefox, colspan and ...

Only top scored, non community-wiki answers of a minimum length are eligible

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