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Recently polymath projects seems to have stopped. One reason for this could be that running such a project requires a lot of effort from at least one person running it. I was thinking if it were ...

Since a while, it's possible to retract a flag by opening the flag dialog again and clicking the 'Retract flag' button. Of course, if the flag is already handled, retracting isn't possible. In this ...

How can one send comment to two participants X and Y simultaneously? Does the following works @X (and @Y). I learned this from some messages by moderatores in meta. but I am not sure ...

This question is motivated by this post, but not exclusively. When we flag OP's as off topic, under the "this question belongs in another site of the stack community", the StackOverflow website is ...

About 30 hours ago, I posted an item on meta that was not here 12 hours later. What's going on?

It's listed under "Technology", "Life/Arts", "Culture/Recreation", "Science" as well as "Others"! I think we should be under Science, after mathematics.SE.

though I'm a relative newbie to the "Stack" community, my research interest has brought me to a dilemma. The area of Numerical Analysis is theoretically covered by both MO and SO, but is practically ...

I only posted two questions on meta, both fact based and both about the way MO is supposed to work. Today, I realized that I have received three down-votes. I have a feeling about down-votes (and up-...

In arrays in MathJax I needed always three backslashes to force a new-line; that was specific for MO and not so in MSE, for instance, where one needs only two. Now that we are in the stackexchange ...

I wonder if the community would find it appropriate if I ask a question like " Is this or that known? It would be interesting for this and that reason. For details see our blog "blah" where we ask ...

To maintain MO alive and well, we need a regular flow of good questions, and not too many bad questions. It seems to me that one has given more weight to the latter, forgetting the former which in my ...

I posed this question two days ago, which effectively asks "Has X hard-to-describe special case on Barnette's Conjecture been proven?". In retrospect, I believe it was a poor question. What I now ...

This is a followup question to Appropriate Reaction to a Failed Reference Request on MO related to Reference Request for Integer factorization with LP/ILP I'm about to prepare an answer that ...

A while ago I sent an email to the stackexchange team on recovering my account https://mathoverflow.net/users/21278/ben-lim. They said I should create a new account and merge it with the old one. This ...

There is a post from 2013 addressing what appears to be a similar issue, but it is reported as fixed, so I guess it's not exactly the same. I have noticed a few posts recently in which backslashes ...

I have noticed that there currently exist tags surfaces (with description "A surface is a two-dimensional topological manifold. The term can also be used to describe a smooth surface, depending on the ...

Really, I'm interested in posting new questions in MathOverflow such that I have some unanswered questions in S.E which I want to post them in MO, but my questions limit had been reached for some ...

Yesterday I asked a question seeking published references studying popular games, to start building up an undergraduate research program. Today I woke up to find it had been made community wiki. Now, ...

Can we have a thread here where one might ask for help accessing to some papers ? E.g. If someone has access to https://projecteuclid.org/euclid.dmj/1077468920 Pairs of commuting matrices over a ...

I recently came across the general-mathematics tag. It has no usage guidelines, nor do I think it should exist. Do any of you know the historic reasons for its existence, or think it should stay as it ...

The post, Freedom of speech in scientific discussions - An invitation to more tolerance in Scientific debates, is currently invisible on the meta front page. I take it this is due to the large ...

I received a down vote on this question without any comment. Can one help me to understand how this question could be improved? I think that a moral and implicit policy of MO is that a comment ...

There exist tags transcendence and transcend.-number-theory (probably shortened from transcendental number theory to fit 25 characters limit for the tag name). At the moment, the tag-info is empty ...

I had asked this question 2 days back, and now I see at the bottom, the link " question eligible for bounty since 1 hour ago", and if I click on it, it takes me to the bounty information page. I don'...

This question just got closed as off-topic. As someone else had already commented there, it is really a computer-science question and thus clearly belongs at cs.stackexchange.com. But we currently don'...

How can we delete a tag, for example the tag paperjs? I tried to go the page for paperjs, but I didn't see a suitable option.

I received 4 downvotes within a short amount of time, I suspect it has been the same person. I think a mechanism should be installed that no user $u$ can downvote more than one post with a positive ...

I noticed that the Stackexchange sites are having a Winter Bash, and one of my friends recieved a hat on MSE. Why isn't this on MO? It'll be fun to have something like that here, wouldn't it? (I ...

This following question was motivated by this question, though many of similar nature can be found throughout MO. The Problem: The question asks whether any bound exist on an expression, and ...

I'm personally quite bothered by the statement on the MathOverflow main page (when not logged in) that "MathOverflow is a question and answer site for professional mathematicians." It seems both false ...

How can I convince mathematicians that this question is very important to be solved and it is worth their time. This question has practical applications, but I don't know the right procedure/forum to ...

Recently my answer to a question got deleted . Before it got deleted, it had comments from 2 specific users. Since I came to know about the comments after it was deleted I was unable to reply. So, How ...

I was thinking about creating tags for some famous or important people, like Erdős (that already exists, as pointed out by Joonas: erdos), that could be used for questions related to their work. ...

I post a question here: https://mathoverflow.net/questions/159016/on-convexity-of-function-in-c10-infty (now deleted). Obviously, those who closed it think it is too elementary. But how do they know ...

When a question begins by saying "This question appeared earlier on math.stackexchange.com" and links to that earlier posting, how does it make sense to migrate it to math.stackexchange.com (thereby ...

The question https://mathoverflow.net/questions/291518/mathematical-work-of-jonathan-gleason was deleted by some unknown person, not long after Jonathan Gleason passed away. I am shocked with the ...

I propose adding n cat lab tag with an intention to discuss mathematics that is written in https://ncatlab.org/nlab/show/HomePage. As https://ncatlab.org/nlab/show/HomePage has large amount of ...

A few months back someone asked about the difference between questions appropriate for mathoverflow.net and those appropriate for math.stackexchange.com. And someone answered, saying something along ...

I have been reading this question and answers and I have submitted the answer there which is really a question. I have added it there, because it come to my mind after reading the questions and ...

The axiom of choice as a consequence of a stronger semantics? On what grounds? "It is not people who break ethical standards who are regarded as aliens. It is people like me who are isolated." (...