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10 votes
Accepted

Having the MO Mathjax parser recognise \( \) is a regex away

The real issue with using \(...\) as math delimiters is the interaction with StackExchange's Markdown engine, since Markdown uses ...
Davide Cervone's user avatar
8 votes
Accepted

My gravatar has changed

This is because of a change that was made to the process that Stack Exchange used to generate the gravatars. The change was done for security reasons because of a vulnerability that was found in the ...
Henry WH Hack v3.0's user avatar
6 votes
Accepted

Inconsistency in MO votes

If you look at your reputation tab, you can see two events for today: upvote +10, and unupvote -10. In general, the reputation tab and the reputation breakdown provide more details than the ...
Martin Sleziak's user avatar
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 ...
Martin Sleziak's user avatar
6 votes

Is there a penalty for merely looking at a question, comments and an answer?

To summarise the conversation in the comments, it seems Thomas may have accidentally downvoted some answers while browsing on a phone (I've done the same, especially when the screen reflows because of ...
David Roberts's user avatar
  • 33.4k
5 votes
Accepted

Why does a table work on preview but not on post?

There needs to be a blank line before the table header for it to render correctly in the final output. Unfortunately, the table renders properly in the preview even without a blank line before the ...
The Amplitwist's user avatar
4 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 ...
Davide Cervone's user avatar
4 votes

How long are the lines?

This was mentioned in the comments, but perhaps spelling this out in an answer makes the situation a bit clearer. When creating a new post (a new answer, a new question), the editor window and the ...
Martin Sleziak's user avatar
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{$U$}...
4 votes
Accepted

Can’t vote to close question as duplicate of question without an answer

I will quote from the help center - the part about duplicates: In general, the original question must have an answer; questions may only be marked as duplicates of unanswered questions (a) on meta ...
Martin Sleziak's user avatar
4 votes

Is there a penalty for merely looking at a question, comments and an answer?

This is a CW answer - feel free to improve and add as needed. The question is already sufficiently answered - the intention of this answer is to collect sources where one can read more about the ...
3 votes

Can’t vote to close question as duplicate of question without an answer

This is just me recording my thoughts as to why, for MathOverflow, voting to close a question as a duplicate of an unanswered question should be an option. MathOverflow is a bit different from other ...
3 votes
Accepted

Account merging

As referenced here, I've fixed this issue. Please let me know if you're continuing to experience any problems, and thanks for reporting the issue!
kristinalustig's user avatar
  • 101
3 votes

How long are the lines?

There's an experimental (as of time of writing) CSS property text-wrap. Note that the linked page includes a browser compatibility chart, which is why I linked ...
Peter Taylor's user avatar
  • 6,471
2 votes

Why does revision 5 of MO120096 look empty?

A few comments which might be useful for somebody who could be in the mood to try to investigate this a bit more - I am basically summarizing the things already mentioned in comments or in chat. For ...
Martin Sleziak's user avatar
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^...
LSpice's user avatar
  • 11.2k
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. ...

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