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This deleted question (10k+ users only) is a student who just copied exam questions and wanted help, and admitted it in the comments to me before deleting the question. I would like this question to ...

I have a question about my MathOverflow post: When does a group and its pro-algebraic completion have equivalent categories of arbitrary representations? I dont see a single research question. Has ...

In this post, I selected text and marked it bold with two stars. But it displays for me (both in preview and after posting) like this: Is this related to the move to CommonMark as noted in the post, ...

Sometimes, pasting a link into the text auto-expands to the question title, and sometimes it doesn't. For example, to take a question transitively suggested by the related links: Is there an ...

A few days ago, I was surprised to see a sudden increase in rep of 80 points in the space of a couple minutes. When looking over my profile today, I saw that I had lost 60 points, with the annotation &...

This user is suspended for 71.63 more years: A user with the same name is not suspended: Perhaps the mods can investigate their IP addresses and act accordingly (both users are basically active on ...

Probably Szemerédi's theorem is the most important result in arithmetic combinatorics,and it is a meeting points of differents other theorem and the starting points of huge contributions of Modern ...

I have got 8 downvotes in the last 2 days, on various questions and answers. Clearly someone is mad at me... Is there any way to stop that? Thanks!

This funding proposal says: But Ben's name is not mentioned here.

Professor Richard K. Guy, the great number theorist had passed away long before in March. Since there were no posts to commemorate him on this site (as far as I saw), I decided to post this question ...

I'm not sure that this is the best place for this post, but on the other hand I could not think of a better forum. Of course I understand if this post must be downvoted since it doesn't strictly ...

I have been working on a problem for days, that I previously mentioned on ComScience StackExchange. The answers were helpful. But, I need more information to develop a polynomial space algorithm. I ...

There is currently a vote to delete this very old thread. I am writing to register my strong protest against this and bring it to the attention of other users here on meta. Most memorable titles

Why do the image links in the post Triangle angle bisectors, trisectors, quadrisectors, show up as raw source? (I tried deleting everything but the [1] or ...

I have a question about my MathOverflow post: Sequence without average density (It's deleted!) I've asked it on 15.07.20 (currently yesterday), and in several few minutes realized that USA's time is ...

The question is deleted and then I'm banned on MO after I asked the following question on MO earlier ( it's first asked on MSE then after sometime with no answer; I asked on MO) : https://math....

Fifty users on MO are identified simply by the name Andrew (with a capital A). Perhaps there are even more common names. Most websites require prospective users to register a name distinct from that ...

As you may know, Ron Graham passed away on July 6, 2020. In the past, when a famous mathematician passes away, many community members feel that they should be remembered on MathOverflow in some way or ...

I need some help to understand what is unclear with my question A reform of logic to secure naive set theory? and also what details are missing, from other persons perspective.

My reputation score seems to be stuck at 510 even if some of my answers were up-voted recently. How do I fix this bug? How do I contact the moderators in order to solve (or at least understand) the ...

Question is as in the title: Is there a way for moderators to contact MO users personally?

This question is about the tag gm.general-mathematics. A meta question about it already occurred here, but was less specific (and didn't generate much discussion). See also the discussion in the ...

This happens with Every mathematician has only a few tricks: the link with the author username leads to the revision history. I checked several other questions, including some cw (this one is cw), ...

Should we blacklist or delete the research tag? This site is about mathematical research, so I don't see how the "research" tag is helpful, any more than a "mathematics" tag would be helpful. Of the ...

I am probably missing something, but I would like to follow a tag on MathOverflow, so that I get emails about new questions with this tag. How do I do this (I read MathOverflow help and Googled this ...

Does anybody here know whatever happened to the StackPrinter site? It seems to me that it is not working anymore. Do you know of a currently working version/link of the site? Please let me thank you ...

I've been part of both communities for half a year now and despite the fact that I've not being particularly active I am surely interested in the good practices in posting questions in here and the ...

Is there a post where one can thank MathOverflow community for its indirect help for a paper that has recently published, along with the link of the paper? (Especially given that MathOverflow being ...

Suppose I have seen an answer to a question by a user X. Suppose another user Y leave a comment under X's answer. This comment received good number of up votes (6 as of now). This comment is not ...

Any question on MathOverflow (or other Stack Exchange site) shows the list of linked questions in the sidebar on the right. A question is added there if there is a link between the two questions ...

The Mathematics SE question Can there be an energetically unbounded three-body orbit where escape is impossible due to conservation of angular momentum? was well received and someone had graciously ...

Recently, while reading this answer, I noticed that the links such as this one to gmane.org don't work. After searching around for a while, I was able to discover that these mailing list posts are ...

This question is driven by sheer curiosity - maybe even vanity? My reputation curve acquired curious shape lately: I can even guess reasons (mostly personal) why the pace is so slow ever after June ...

I am currently studying an existence lemma that appears to be simple yet powerful. From what I know about it, it is applicable in combinatorics, topology, graph theory, probability, percolation theory,...

The 2-categories tag has no usage guidance, can you help us create it? This is what the 2-categories tag page https://mathoverflow.net/questions/tagged/2-categories says. Can some one create usage ...

It frequently happens that I want to find my old answer. The list of answers on my page consists of 35 pages, so searching in it using my browser search is too time consuming. On the other hand, if I ...

Can I ask question which require very high accuracy calculation with very delicate nature on MO : Ex: calculate: $$S(q)=\int_{x=2}^q\sin^2\left(\frac{π\Gamma(x)}{2x}\right)dx$$ for $q=10^3$ or $10^...

I am looking to find a forum in the Internet intended for math enthusiasts to discuss math ideas outside the question-answer format but at high level. Can anyone advise such sites?

This question on the history of the ellipse terminology was migrated to hsm after a week of being active on MO and receiving several useful answers. Did the OP ask for migration? Why are some ...

One can push the "follow" button below a question in order to get advised of new developments. Can it happen that one gets news from the "recent inbox message" about some questions that one has ...

Sometimes I stumble upon a user who is shown with reputation 1 - despite the fact that the user has many upvoted posts and many badges, which means they should have higher reputation. Why does this ...

Bountied questions cannot be closed: this prompted this meta-MO question. In the answer to that question, the reasons for this feature are explained (closure would shorten the bounty period, possibly ...

Related: this So I have just run a query at SEDE, and get the following data: Upvotes cast by rep 101 users: 66626 Upvotes cast by all users: 1777003 Hence by simple calculation, we get $$\frac {...

Recently, the following tag synonyms were created by a MathOveflow moderator: abstract-algebra $\to$ ra.rings-and-algebras, geometry $\to$ mg.metric-geometry and discrete-mathematics $\to$ co....

Why do we have this restriction? There are many circumstances where it is natural to cite several users (especially when several=two) in one comment.

We have a new user called Asian but no Chinese. It's not spam, and I guess it's not offensive, but it seems … weird. I couldn't find a tag related to username issues on the only other post I ...

In the first paragraph of Prove or Disprove this Darboux-like sum of a function defined on infinite limit points converges to zero, I state that I do not know whether this is a research question. Is ...

25 hours after my account was scheduled for deletion, the account is still active. I tried deleting my answers manually but it is not possible in most cases, same for questions. What should I do?

I am reviewing many posts with close votes recently, and I often end up with the same uneasiness about the reason to chose. In the "Community specific reason" option, there are This question does ...

To moderators: Is my account deleted? The rep number is now 1 . but I can still login. I cannot ask this on meta because $1<5$. Thanks for the comments. The account is scheduled for deletion now.