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25 votes
23 answers
3k views

Help cleanup tags!

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 ...
25 votes
2 answers
946 views

Request from PRIMES to keep an eye out for their problems

On m.SE last year there was a problem with someone cheating on the entrance problem set for the PRIMES high school research program at MIT. Selection for PRIMES for this year has begun, and they're ...
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  • 26.5k
8 votes
1 answer
260 views

Tag for Fragments of Peano Arithmetic

There are quite a few questions on the main site related to (first-order) Peano Arithmetic and its fragments. Here are two examples: 1, 2 (but there are many others). It would be nice, and feels ...
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11 votes
4 answers
919 views

Development of the MathOverflow community

From the Stack Exchange Data Explorer one can obtain the following data: Number of people who joined MO in the last 4 years and have collected at least 10000 points: 96 Number of people who joined ...
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  • 17.9k
5 votes
3 answers
626 views

Is "reciprocal voting" permitted?

I've noticed that when I ask a question on MathOverflow, or any StackExchange Site, and I either upvote or downvote an answer written by a high-reputation user, regardless of how old the question and ...
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8 votes
1 answer
311 views

How do I delete an accidentally created tag?

While posting this question, I meant to put the constructive-mathematics tag, but I accidentally just typed "con", thereby creating a "con" tag in MathOverflow. How can I delete it?
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4 votes
1 answer
91 views

Search not working?

When I load https://mathoverflow.net/search?q=topology (or any other search query) I get a Your search returned no matches. response.
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8 votes
3 answers
690 views

Who gets the reputation?

I asked a question on MO and it now has three correct answers, all more or less using the same strategy and similar to each other. If I accept all of them, do they all get the reputation they deserve?
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  • 2,219
14 votes
1 answer
750 views

Who are the MathOverflow moderators?

Where can I find the list of MathOverflow moderators? How can I contact them?
6 votes
0 answers
171 views

Seeing up/down votes of your own posts

When a user reaches 1000 reputation they become an established user. With that comes the ability to see the number of up and down votes on any post. While I have no problem with this privelege being ...
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5 votes
1 answer
1k views

What are reasons for allowing anonymous voting?

What reasons for anonymity of voting overcome the following objection? A down-vote fails to communicate what is thought to be wrong. Suppose I post a question that says "Doesn't the fact that $2+3=5$...
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4 votes
1 answer
339 views

Are downvotes zero cost?

I've just gotten a downvote on an answer in main and it did not result in a decrease in my total rep. Is this normal?
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5 votes
5 answers
315 views

Two tags for partially ordered sets

There are currently two tags for partially ordered sets: posets and order-theory. In my opinion, they mean the same thing. I see three posibilities. Merge the tags. Make them synonymous. Keep them as ...
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39 votes
1 answer
1k views

Cancel the association bonus

There has been some previous discussion of the association bonus, c.f. The Association Bonus Is there an association bonus for this site? Can we please get rid of the association bonus for other ...
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4 votes
1 answer
435 views

moving questions between MO and math.SE

How does one decide if a question is good for MathOverflow or Math.StackExchange? I've been using the criterion of being "research-level" but that can be subjective. An expert may consider a ...
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  • 21.8k
2 votes
1 answer
191 views

Does anyone else experience this "browser-freeze" problem?

Both MathJax & ChatJax freeze my chrome and IE7 browsers running on Windows Vista for at least 2 minutes while it loads. The entire bowser is unresponsive, I can't even click on the start; ...
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34 votes
5 answers
1k views

Long-term archiving of MathOverflow

Suppose 'the worst' happens. Stack Exchange folds (commerical entities have been known to), and at the same time the moderators lose all interest and/or decide the despise mathematics. Where would ...
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2 votes
0 answers
181 views

Why are the number of profile views displayed?

Is there a reason why the number of profile views is displayed when I go to my profile? I don't think it is a bad thing, I just don't see the purpose.
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7 votes
0 answers
214 views

Projective geometry tags

Would it make sense to merge the tag projective-plane and projective-space into projective-geometry? It doesn't seem useful to have to search for each of these separately.
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6 votes
2 answers
2k views

User retention rates on MathOverflow

A two-input table : First input : number of users with more than $500, 1000, 2500, 5000$ or $10000$ reputation points. Second input : number of users not seen for more than $1/12, 1/4, 1/2, 1, 2$ or $...
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6 votes
2 answers
484 views

"Silent" Edits for MO?

This question is inspired by Do we have an unofficial quota on how many old questions one should bump for minor edits in a single day? Wouldn't it make sense, to have the choice of a "silent" ...
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13 votes
0 answers
432 views

Asking exactly what you need

If you compare my remarks in Do partitions of unity exist if we impose additional conditions on the derivatives? and Exponential sums you'll see that the problem and my request were exactly the ...
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  • 52k
2 votes
1 answer
95 views

Optionally only show "favourite tags" questions

I wonder if it would be possible to optionally only show questions having my "favourite tags" on them. (See also Questions containing my "favorite tags" are barely distinguishable)
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6 votes
0 answers
12k views

Google Chrome not rendering Latex in browser

I have seen a solution to this problem for Firefox, but assume it is not the same for Chrome. This just started happening recently, and I have no idea how to fix it! Any mathematical typesetting on ...
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  • 101
5 votes
1 answer
251 views

How to post a file

Is it possible to post a pdf file of a published article to MO as background for a question? I have searched the help for this. I know we can post specific citations to published articles, but this ...
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5 votes
0 answers
106 views

Screwed up LaTeX when presenting edited posts for approval [duplicate]

In about one of every 4 cases when I am asked to approve an edit, the comparison page that shows the suggested edits suffers from incorrect rendering of LaTeX, which often makes both the original and ...
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  • 52k
14 votes
0 answers
507 views

Thank you letter!

I am quite aware that meta has not designed for what I am about to write, but I cannot help myself. This concerns a recent "question" on MO: US editors and reviewers vs Iranian Authors? Indeed, it ...
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  • 2,219
4 votes
2 answers
166 views

Are line breaks and lists supposed to work in comments?

Are line breaks and lists supposed to work in comments? If not, how was I supposed to write the following answer to my own question? "I have found two references. Indulal, G. (2007). Studies on the ...
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  • 129
10 votes
1 answer
287 views

Why isn't "no longer relevant" an option for closing?

I would like to be able to close questions as "no longer relevant" if they have been answered in the comments (such questions generally are near the border, but on the MO side, of appropriate for MO). ...
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36 votes
5 answers
4k views

History of MathOverflow

What is history of this site? When and by whom was it created? What were the important milestones of this site?
7 votes
1 answer
308 views

Strange! I know someone who can answer but I could not let him know!

There is a recent and interesting post on MO: erdos-harary-tuttes-dimension-of-graph-progress-in-last-48-yrs that I know a friend of mine can answer. I had in mind to let him know via this feature: ...
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  • 2,219
-4 votes
2 answers
177 views

Is it possible to add an option to migrate to a programming site?

There have been a number of questions in the Close part of Review lately which were basically asking for help creating an algorithm to do some mundane task (see here, here, here for example). I wonder ...
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  • 21.2k
7 votes
2 answers
708 views

Appropriate Reaction to a Failed Reference Request on MO

This follows Amir Asghari's advice concerning my comment on the answer to Answering my own question: Background of my question is, that I can envisage different reasons for reference requests on ...
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18 votes
4 answers
1k views

Mathoverflow and the mathematical community

What is the general point of view of the mathematical community about MO ? Do you talk about MO with your colleagues non-"MO users" ? What are their views? Is it acceptable to cite MO's posts in ...
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0 votes
0 answers
169 views

Is this question suitable for MO?

I recently posted this question on MO. However, it quickly got downvoted and there was a comment which read that "MO is not for homework." However, that question was not homework and I had not got ...
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13 votes
0 answers
356 views

MathOverflow Weekly Newsletter / Greatest hits from previous weeks

I don't know how many look at the MathOverflow Weekly Newsletter, but these were the "Greatest hits from previous weeks": "Video lectures of mathematics courses available online for free" from Feb ...
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2 votes
1 answer
172 views

What happened to my previous posts?

Recently, I logged-in to mathoverflow (after a period of inactivity) to find out that none of my previous posts shows up. Can anyone shed a light on this?
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  • 1,565
1 vote
2 answers
220 views

Tag scores, tag badges, and CW answers

I have a couple of questions concerning the score for specific tags, and the corresponding tag badges. It appears that community wiki (CW) answers do not count towards tag badges, even when they ...
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8 votes
1 answer
448 views

Answering my own question

As a typical scenario, assume I ask for examples of some mathematical phenomenon and somebody answers my question and provides 2 families of examples. After several months, I figure a third family of ...
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19 votes
1 answer
884 views

Somebody copied my question from mathstackexchange word-for-word

While using google to search for "11th power diophantine" it gave the mathoverflow link, The diophantine eq. $x^4 +y^4 +1=z^2$ which is copied word-for-word from my mathstackexchange post, https://...
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6 votes
0 answers
362 views

Must I be precise when asking questions, or will readers fill gaps based on context?

Suppose I asked a question about graphs; do I always have to precisely define, what kind of graph I mean (directed/undirected, with/without parallel edges, with/without loops, connected or not, with ...
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4 votes
3 answers
496 views

Local vs. Global MO in relation to "Polymath" efforts

Certain polymath-flavor questions appear on MO, and are not really appropriate for the forum. Such questions are probably posted (I can only be sure for my own such posts) because MO captures a huge "...
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  • 6,705
6 votes
2 answers
264 views

Undelete request, Question 67384

An answer to Source and context of $\frac{22}{7} - \pi = \int_0^1 (x-x^2)^4 dx/(1+x^2)$? posted on 9 June 2011 gained 31 upvotes before being deleted by its author on 23 August 2012. Would those who ...
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10 votes
3 answers
852 views

Why are trivial answers upvoted more than answers that actually contain substance?

I have noticed that a two line answer that anyone can come up with usually has more upvotes than an answer that is more difficult to come up with. Is this trend simply a result of pure laziness as ...
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13 votes
2 answers
363 views

Usefulness of longer tags

This thread is meant as a place to discuss the utility (or lack of it) for longer tags. Currently, tags can have a maximum of 25 ASCII characters. That leads to interesting results such as ...
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23 votes
0 answers
704 views

Should "The probability for a streak when tossing a coin" be reopened?

The question "The probability for a streak when tossing a coin" is on hold. [Edit: It has been reopened.] I disagree with closing the question and voted to reopen. This problem may sound like it is ...
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  • 27.1k
3 votes
1 answer
456 views

Is it OK to ask the reason for a question to be on hold or closed in meta?

I don't know much about the culture of MO. So I would like to ask the following question. Is it OK to ask the reason for a question in the main to be on hold or closed in the meta?
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  • 1,139
1 vote
3 answers
1k views

Why do they think this question is not of research level? [closed]

This question was originally asked in MSE about a year ago. Nobody has answered it. So I posted it here. I wonder why they think it's not of research level.
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  • 1,139
11 votes
1 answer
429 views

Undelete request

This is motivated by this question, see also the comments, and Will Jagy's answer. I was asked to start a formal request, so here it is. A user that has expressed no desire to participate anymore on ...
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4 votes
1 answer
395 views

Undelete request, question 23943

NEVER MIND --- the same moderator who suggested I post here has solved the problem by deleting my copy-paste job and undeleting the answer we wanted undeleted. [or maybe it got undeleted by some other ...
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