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 ...
20
votes
Accepted
Why is MSE still down (read-only)?
What happened?
During our planned maintenance window on March 17th/18th, a sequence of events in our Colorado data center left Mathematics Stack Exchange in read-only mode for several hours after the ...

Aaron BertrandStaff
- 101
19
votes
Accepted
Whoa! 1300 items in the "Late answer" review queue
This is the result of a very recent change to the way answers enter that queue. Previously, the conditions were:
the answer was posted at least 30 days after the question was asked; and
the answer's ...
14
votes
Accepted
Awarded extra 'fanatic' badges
The Fanatic badge is supposed to be earned once. Otherwise Asaf Karagila would have earned 19 of them for the 19 disjoint 100 consecutive day periods he has visited the site (or 197 for the 197 ...
14
votes
MathJax is breaking in short expressions frequently today.
A quick note. We know what's going on, it's a change which had some side effects. I'll take a stab very soon.
Update: It looks better now, as you need 60 consecutive unbroken characters to replicate ...
14
votes
Accepted
Is it possible to downvote a deleted post?
No one.
But you need to differentiate between downvoting a post, and an upvote being invalidated. Accounts get deleted all the time for various reasons (e.g. self-deletions), and when those accounts ...
13
votes
Accepted
Migrating a question to Meta doesn't decrease reputation
The question still exists on the main site, so they keep their reputation – for now that is.
The question is left as a stub, or pathway to the new site, for 30 days, after which it is automatically ...
13
votes
Voting to delete a Question after it has been reopened and reclosed
This has now been fixed. Users are now again able to cast a subsequent delete vote if the post in question has been reopened and reclosed without an actual deletion event.
Thanks for bringing this to ...
12
votes
Accepted
Why is the user search so out of date?
You were only looking at the reputation earned during the current month:
Click on the "all" to get cumulative reputation (modulo caching):
12
votes
Accepted
What happened to the [support] tag on meta?
So... Yesterday, Jon Arndt found an obscure bug over on Super User:
Normally, when looking at tag information, at the bottom of the screen, there is a button labeled "Edit Tag Info".
However, ...
12
votes
Accepted
A possible bug regarding MathJax, previews, and the arctangent/tangent functions?
A linked question contained some malicious code in the title. I've removed it.
12
votes
Accepted
"Hidden content" in a question
When you have k<p the parser breaks down and omits the remainder of the paragraph.
This is one of the main reasons why it is important to properly format ...
12
votes
Chrome doesn't display some symbols
Davide's answer is excellent, but he sort of buries the fix. You need to right-click on the MathJax-rendered math and select
Math Settings > Math Renderer > SVG
instead of the default "...
11
votes
Accepted
"Enlightened" Badge wrongly awarded
If you look at the reputation tab of the author of the currently accepted answer
you can see that the answer was today first unaccepted (11:04:00), and later re-accepted (11:05:36).
It is very ...
11
votes
Accepted
Did the Community user make a mistake?
The question asker deleted their account, and upon account-deletion, all negatively-scored content from that account is deleted.
So the question did meet the criteria for deletion, although not those ...
11
votes
Accepted
Earned Steward badge twice for the same queue
This is not a bug; it's part of an update to the review queues. You now get one Steward badge for every 1,000 reviews in a single queue. For more details, see Steward badge can now be awarded multiple ...
11
votes
Accepted
How many people voted in the 2021 Moderator Election?
The correct number of voters/valid ballots is the one OpaVote is showing — so for the case of Math's 2021 election, that's 1882.
It looks like the count presented on site was counting all the users ...
10
votes
Accepted
Why does meta have two additional moderators?
There are some oddities when accounts are merged and/or privileges removed for SE staff. Especially for metas it can take quite some time for this to get ironed out.
In more detail:
One of the two ...
quidMod
- 41.9k
10
votes
Accepted
TeX equations not rendering the not-equal symbol correctly
This is mainly by design. The explanation you give yourself in the comment is correct.
The (TeX) command \cases is unusual, in that while it is mainly "math" ...
quidMod
- 41.9k
10
votes
TeX equations not rendering the not-equal symbol correctly
As quid mentioned in his post, MathJax originally didn't implement \cases properly. Specifically, the second column was in math mode rather than text mode as it is ...
10
votes
How can I post as guest again?
It is no longer possible to ask questions with an unregistered account on Mathematics Stack Exchange. The change was made on or about 10 Oct 2016, at least in part in because of the response to the ...
10
votes
Links in spoilers aren't hidden
I've gone an updated the CSS for spoilers - there was something overriding the spoiler CSS in this instance.
With you in the next build (rev. 2017.3.14.*)
10
votes
Accepted
I can't write 'Hello!' at the beggining of the question
You are not supposed to write a greeting at the start of the question. There is a script in place that removes certain common forms of greetings (or at least what appears to be like one, there are ...
quidMod
- 41.9k
10
votes
Accepted
Unexplained Problem with my Review Queues
Your profile shows you've voted 40 times today, which means you have no votes left. Since voting (up or down) is one of the most important things to do in the First Posts and Late Answers queues, you ...
10
votes
Are you sure you want to leave this page?
First of all: thanks a lot to everybody for notifying us about this issue. We have been able to reproduce and fix the issue. Please do let us know (in a comment to this answer) if you're still ...
10
votes
Accepted
Why does Mathjax look different on different devices?
Appearance will depend on what fonts are installed on your device, and what math renderer is chosen. For me in Safari in MacOS, here are some samples. ...
9
votes
Accepted
A probable bug in the "people impacted" of my profile
You got a recent vote on a CW answer to a very popular question, which brought your answer to a +5 score. This makes all the views on the question eligible for the impact counter.
Which is why you ...
9
votes
Formatting problem with "invisible" comments
This seems to work. (Instead of <br> you can simply use two spaces, if you prefer.)
...
9
votes
Accepted
Why isn't this person a new contributor?
The author of the question you linked has previously posted a question here, on the $18^{\text{th}}$ October. That question was roomba'd today, approximately an hour and a half after the question you ...
9
votes
Accepted
spurious slash causes \, to be misinterpreted
This turns out to be an interaction between StackExchange's Markdown processor and MathJax. Here's what's going on: in the editor, the preview code has to remove the mathematics before it is ...
Only top scored, non community-wiki answers of a minimum length are eligible
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