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30 votes
Accepted

About if questions in Research papers can be asked on MathOverflow

I'd say that this is a bit of a grey area. If you want to ask a question of this type then you should prepare it carefully: do your best to isolate the specific point that you are confused about, ...
24 votes
Accepted

Disappearing "Hi!"

I began this answer with a salutation, and hopefully it was never posted, because that's what the system is supposed to do, as per Jeff Atwood's answer on Meta Stack Exchange: We now automatically ...
21 votes
Accepted

How can I customize site in my browser to get "old feel" look of MathOverflow?

Here is the CSS I was talking about: ...
  • 15.8k
20 votes

Requests for reopen and undelete votes for closed and deleted questions

[RE-OPENED and later CLOSED again] The question How the idea of adjoint matrix has been designed? isn't great, but isn't awful, and these two answers have been posted (and upvoted) on G+ rather than ...
20 votes

How can I donate to MathOverflow — if I should?

Update: Donations are now possible, see this post: Donations to MathOverflow, Inc [Apologies for the long delay in answering, I was on my honeymoon! I may update this quick answer after I get back to ...
20 votes
Accepted

What is MathOverflow's "agreement" with Stack Exchange?

Suggested in comments but I don't know if this is allowed. In any case: I've used an OCR program to copy the contents of the 2.5 pages below. I've used some minimal editing to keep the format vaguely ...
20 votes

Would newly elected moderators join the board of MathOverflow Inc.?

The members of the MO board are the six current moderators, Anton Geraschenko, and Ravi Vakil. Whoever becomes a moderator becomes a member of that board.
  • 51k
19 votes
Accepted

Would newly elected moderators join the board of MathOverflow Inc.?

This is an important question, thanks! My response is a clarification of @Todd's answer, but it seems better to give it as a separate answer. The board exists because of the need of a legal entity ...
  • 3,747
16 votes
Accepted

10 year 'temporary suspension'?

Naturally, we do not discuss details of individual users. This is indeed an unusual suspension. Also note that this is a network-wide suspension, so this is not necessarily related to this user's ...
16 votes

What is the deal with changes to the front page?

I find the new site basically unusable, and don’t expect to continue much participation here if it stays in its current form. Tim requested more details. The main point is that I can't skim the main ...
  • 26.8k
15 votes

Why does mathoverflow constantly compile the latex for my questions and answers?

I want to see how may people also have this problem or if I am the only one, so let me conduct a basic poll. $\bullet$ If you have the problem where typing a long answer with plenty of mathematics ...
15 votes

a spate of deletions by "Community"

They got selected for deletion because of lack of community interest: If the question is more than 365 days old, and ... has a score of 0, or a score of 1 in case of deleted owner has no answers is ...
15 votes

What's the purpose of the favorite button?

You can find links to some basic info on favorites here, specifically this post is rather detailed: How do favorite questions work? This feature request has been posted on main meta a few years ago: ...
15 votes

the number of on line users at a given moment

Here is a snapshot of the site analytics to which Martin refers: So, roughly $40,000$ page views per day (in the summer). Might be interesting to know what happened on May 14th and on August 8th...
15 votes
Accepted

Were there some recent changes to the moderators' team?

Mariano hadn't used the moderation interface for an extended period, and was proving hard to contact. The StackExchange staff said they wanted to remove his diamond, mostly as a security measure. We ...
15 votes

What should I do when I see a spam post on MO?

Any user with at least 15 reputation points should flag the post as spam. After 6 spam flags, the post is deleted. In addition to being deleted, even for users who can see the deleted posts, the ...
15 votes
Accepted

Mathematics and MathOverflow relationship

There is no formal connection. You may often see the same question on both sites because a lot of people cross-post (manually), a practice which is generally frowned upon, especially when the same ...
  • 51k
15 votes
Accepted

Is it possible to temporarily comment out part of a post?

You can hide the part in HTML comments: BEFORE <!-- this is something I want to hide --> AFTER produces: BEFORE AFTER Spoilers would be another option, ...
  • 2,691
14 votes

Recognizing identifiable users changing user names

Let me summarize what was said in commments and in chat. There are a few related feature requests on Meta Stack Exchange, but my impression is that they are unlikely to get implemented: Make the “past ...
14 votes
Accepted

How to @ a user with non-Latin characters?

I am not sure about people using mobile devices, but on desktop using comment replies doesn't seem that different for users with non-Latin usernames. If I am in a comment where such user can be pinged,...
13 votes
Accepted

Numbering and cross referencing of equations in questions and answers

MathJax supports manual numbering using $$\tag{…}$$, as below: $$\tag{1}\label{grz}\Box(\Box(p\to\Box p)\to p)\to p$$ $$\tag{1}\...
13 votes

Can I somewhere see my own deleted questions?

In fact, you can see any of your posts provided you have a link. So basically the question is - is it possible to find link to my deleted question if I did not save the link somewhere? There are two ...
13 votes
Accepted

Why can't I post my question on MO anymore

The reason is explained in this help center article. As the article states, the best step you can take next is to edit your existing questions. Unfortunately, you have several deleted questions with ...
13 votes

Is it possible to temporarily comment out part of a post?

Since other answers mention HTML comments, let me clarify that using them is only a commonly employed custom on SE sites, which just abuses the fact that it works by accident. In reality, the ...
12 votes
Accepted

Changing mind about upvoting a comment

There's a meta stackexchange thread on this topic, here: Cancelling upvote on comment?. In brief, you can change your mind -- "upvoting" again undoes the upvote -- provided that you do it quickly (...
  • 51k
12 votes

Disappearing "Hi!"

Boundary regularity of suitable weak solution for the Navier-Stokes equations, J. Funct. Anal. 268 (2015), no. 8, 2171–2187, MR3318646. The above is supposed to be a reference to a paper by the ...
12 votes

"[error] I'm a teapot" when trying to add a picture

The "teapot" error is one of the various responses we return if something looks very suspicious at the http/form level - most likely because of an XSRF check failure. On mathoverflow, this is usually ...

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