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I was just browsing the main page this morning, and I decided to look at some of the posts by new people. One of the questions had garnered three votes to close and a comment from a regular user to ...

You have probably seen already a link, on the Featured on Meta sidebar, to an announcement of an upcoming upgrade to the text editor on Stack Exchange, Opt-in alpha test for a new Stacks editor. As a ...

I've posted an incomplete answer to the question Does a left basis imply a right basis, without AC? which has a 50 point bounty that expires soon. My answer is basically an idea that I think (but I'...

Is there data available (besides crawling thousands of questions) on how often we use the downvote button, and how quickly? The motivation for this question is Carlo Beenakker's recent answer on MOM. ...

I am a math undergraduate at my local university, and I have decided to make it a habit to attend the weekly seminars that are given by the faculty. Today, the talk was on the Dynamic Mordell-Lang ...

I am wondering if it would be worthwhile to ask why a certain textbook and/or its authors (Dolotin and Morozov) are not well known. From the description of the book: This unique text presents the ...

I have a question about my MathOverflow post: the minimum amount of x, x(x(125x + 300) + 240) + 64 is zero, what is 5 times of x? Why is my question is closed and do I get views?

As we say goodbye to the old year and welcome the new one, we have a tradition of sharing moderation stats for the past 12 months. As most of you here are aware, sites on the Stack Exchange network ...

It seems that the link http://mathoverflow.tqft.net/ (which, according to this announcement, serves as an archive of the old tea, i.e. the previous incarnation of MathOverflow Meta) no longer works. ...

At The concept of duality, it looks like the link in the comment is perfectly well formed. Why isn't it parsed as a link?

There is a feature of showing suggested tags after the body of a question is included. These suggestions are based on the body of the question. More details can be found in these posts: Automatically ...

Starting last night I can no longer see comments when using the site on my iPhone, nor can I comment. Things are fine on my iPad just not my iPhone. I am wondering if anybody else has ever had this ...

I followed with much interest the recent discussions on Meta about the community being perceived as unwelcoming to outsiders and the importance of looking for solutions (if any). In order to do this, ...

There goeth rumours abroad that some off-site groups are seeking a private forum together with the moderators here in order to make policy for MO. I hope that the moderators will commit to ...

I posted my feature request (Feature request: a possibility to leave mathoverflow) yesterday, yet it is not showing on the list of most recent questions. I thought it might be the negative votes but ...

I was trying to explain the current controversy how “welcoming” MO is to a non-mathematician friend. The current best hypothesis for why MO is either attractive or repellent in general is that it has ...

Context for this question: I am writing an article on MathOverflow for the Notices of the AMS. One thing I try to address is the apparent gender skew of our website. One of the readers of my draft ...

I was under the impression that "deleted" threads were still visible by moderators or other high-level members of the community. Is this correct? If a post was deleted that shouldn't have ...

As you know well, when one attempts to delete a question that has already received an answer, the following message is displayed. "Repeated deletion of answered questions can result in your ...

I've seen expressions like $x\lt y\in S$ used on this site to mean "$x\lt y$ and $x\in S$ and $y\in S$." This has me worried because I sometimes use $x\lt y\in S$ to abbreviate "$x\lt y$...

I am interested in this question on math.stackexchange. To me it is interesting because while it looks "obvious" that there isn't a solution with 6 turns (I have some very partial results ...

There are a number of questions on this site about second-order logic (admittedly I may have asked a few more of them than is reasonable). For example, searching "second-order logic" (in ...

Scenario (true story): after posting something I became doubtful about certain claim there, so I want to hide it until I clarify my doubts. Of course I could just move that part to a temporary file, ...

In a comment of the form $\DeclareMathOperator\a{a}$Here's a [link](http://mathoverflow.net) and [another link](http://mathoverflow.net) $\a$, neither link is ...

Basically, I have 2 versions of a theory. This is like having two competing theories of complex numbers, one where $i^2=-1$ and the other where $j^2=1$ (hyperbolic numbers) or extending reals with $+\...

Is it allowed to use images to paste math formula in mathoverflow.net ? I think this is high efficiency, and few people search math questions by LaTeX.

I wonder whether the visibility of a post changes according to the user's reputation asking the question. Is it also known if a user's posts' visibility is affected by other actions, like having ...

This is meant to agglomerate tags that need (occasional or regular) cleanup. That is tags that mean multiple unrelated things and need to be separated into more specific tags. Please follow the ...

I would like to know if this question is appropriate for Math Overflow, and if so, how I can phrase it better to get the best results. Question: I recently spoke with a very nice mathematician who ...

My question, asked months ago, was well received. Now... I'm wondering if this question is on-topic for MathOverflow: Consider a semi-Riemannian manifold $\zeta^{2,2}$ with metric, $g=\frac{dxdy}{xy}+...

Well I don't really get notifications of flag responses sooo... Nov 6 at 14:01 helpful - I suggest you take this up in meta; there is not enough space to answer here. But there are a number of ...

Prepare to downvote me. But don't think of not downvoting me just because I pre-emptively self-deprecated myself to put a show of humility. Just pretend I'm as arrogant as I may be perceived to be in ...

On MathOverflow, questions about mathematical logic bear the tag lo.logic, which has a synonym of logic. Where did this lo.logic spelling come from? Why is it not ...

There is an answer to an old community wiki question that was edited about 45 mins ago to make it sexually explicit, with a second attempted edit pending approval to make it even more so. I rejected ...

I vaguely remember seeing links to comments somewhere, was it a dream or it is indeed doable?

The "stats" section of a tag's page says how long the tag has existed, and the tag description history says who created the tag description. However, I don't see how to find who created the ...

An off-topic question recently appeared on the main site. It was heavily downvoted and got deleted after only a few minutes. But at one point before the question was deleted, I noticed it had been ...

"MathOverflow is a question and answer site for professional mathematicians." May other professional researchers ask questions at MO? Should they check their credentials at the door? If not, and ...

Sometimes you see in answers or questions a link to an earlier answer to a different question. The url often is a mysterious sequence of digits and letters. How is it obtained? Linking to a question ...

This question might be weird, I wouldn't feel bad if it is closed. I know that MathOverflow is for mathematicians and math StackExchange for people studying math at any level. But questions like "...

Currently we have quotes, but the quoted text looks more faint than the surrounding text The vertical bar hardly helps, I believe. In fact I think (although I cannot explain it) that this bar ...

I discovered few days ago that my profile picture is gone, had to reupload it. Did anybody else encounter this? Do you know the reason?

I often see questions like this: co.combinatorics - Given index $i$, what element is at position $i$ in sorted subsets that are obviously better suited for the Math.SE site. This particular question ...

It seems to me that a tag for "arithmetic logic" is missing while it concerns a significant number ($\sim 500?$) of questions, which currently have no common tag other than the very broad lo....

Something peculiar has just happened. A week ago a 300 point bounty has been added to this question (I think its content is hardly relevant to this meta question) [note: the bounty was added by a user ...

Please reopen this question: A problem of an infinite number of balls and an urn I have a nice answer. (Added (DR): now re-opened. Please note there are ten deleted nonsense answers, which I imagine ...

At this closed question the user seems to be playing ignorant, but I looked at their network profile and some of the other StackExchange sites, and there is a prominent banner This account is ...

Should questions consisting in barely asking for a copy or link to some given paper be community-wiki? A recent example, among others, is and Reference of J.L. Waldspurger's paper on Shimura ...

I was just trying to clean up Understanding why $\pi_{3}(N) = \mathbb{Z}_{(2n, n^2)}$? , which was originally almost entirely cut-and-pasted images without any alternate text. For the first image, I ...

Sometimes I discover that "old" MO questions are duplicates of even older MO questions. Two examples: Embarrassingly, I found out that my own question: Formula for number of permutations ...