# Questions tagged [math-stackexchange]

Questions related to the closely related website, https://math.stackexchange.com

54
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### Undelete a post

Is there any possibility of undeleting a post? I know it was closed years ago as not MO level. So maybe it could be undeleted and then moved to MSE? Just because it hosts a discussion which is ...

12
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1
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### Was the custom close reason mentioning Math.SE removed?

For a long time, these two custom close reasons used to be available:
This question does not appear to be about research level mathematics within the scope defined in the help center.
MathOverflow ...

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1
answer

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### Asking the same (subjective) question on Math.SE and MO

I asked a question a couple of years ago on MathStackexchange which was quite popular. I would like to ask it on MathOverflow as well, since I'd be interested in the answers there. But I'm never ...

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3
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### Welcoming new user: on a recent question about connections

I think that the history of this question about connections is unfortunate. I would like to discuss (respectfully, without throwing blame around) whether/how a better outcome might have been achieved....

21
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1
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### Can I ask a question on MathOverflow and also on another site?

Sometimes one might ask a question on a website such as Mathematics Stack Exchange which is comparable but not identical to MathOverflow, and then decide to post the same question on MathOverflow. ...

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### Migration of a detailed answer on MathOverflow Meta to Math.SE

Upon reading Professor Hamkins' detailed answer to this recent Question about $i$ versus $-i$ here on MathOverflow Meta, and his accommodating comments:
Oh, I see now that this was a meta question,...

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1
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### Questions seemingly/apparently/ostensibly too elementary for overlfow

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 ...

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### Type of content to be posted on MO and differences with MathSE

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 ...

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### Would this question be appropriate for MathOverflow?

I asked this question in Math Stack Exchange several days ago, but I have received no interaction so far, apart from 4 upvotes. I was considering adding a bounty, but since (to my humble understanding)...

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### Is my question suitable for MO?

Around a month ago I asked a question on ME here. It was well received (got seven up votes). Sadly nobody was able to help much. To get more attention I also placed a bounty on it. Still no luck. The ...

4
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0
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### Possible additional option for "See Math.Stackexchange" close vote [duplicate]

Some of the most common close votes are for people who have posted homework questions, to which the usual appropriate response (to my understanding) is to flag as off-topic with the message "...

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0
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### Should this be moved to math.stackexchange?

I posted Lower bound on Carmichael Function
and just assumed it belonged here, but after thinking about it for some time I'm not so sure. The Carmichael function itself might be encountered by other ...

5
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1
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### Mathematics and MathOverflow relationship

Is there a connection between Mathematics and MathOverflow sites? Obviously topics are similar, but I mean something like: do questions posted on one site, perhaps with certain tags, automatically end ...

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0
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### Are we making it too tempting/easy to send inappropriate posts to MSE?

This "question" (asking for generalized help with a long list of elementary topics) is clearly going to be unwelcome almost anywhere, yet two users voted to close with a suggestion to "see math....

5
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0
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### When we close questions and suggest MSE, should we link to their How to Ask? [duplicate]

When we close questions by saying
MathOverflow is for mathematicians to ask each other questions about their research. See Math.StackExchange to ask general questions in mathematics.
...should the ...

34
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6
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### How can we visually differentiate MathOverflow from MathStackExchange within the constraints of the new design themes?

The new design theme introduced for MO here is now live. Several issues with the new theme were raised in that discussion. I'd like to discuss one of them, which is sort of buried in my answer and ...

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1
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### What I can do if my questions limit had been reached in MO from long time?

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 ...

11
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2
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648
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### If I can't get an answer on math.stackexchange.com or dsp.stackexchange.com, when should I post here?

I have a question about finite fields that I posted on math.stackexchange.com a few weeks ago, for what seems to me like a tough problem, and I haven't gotten an answer (or figured it out myself).
...

0
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1
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### Re-Posting on Math.StackExchange

Here is the link to question:
Counterexample Required (Standard Notations)
Perhaps it seems that I am being overly impulsive by posting this (and maybe that is right). But after looking at all the ...

4
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0
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### Thread for asking about suitability of math.SE question on MO?

Often there are questions of the type: "I have posted this question on math.SE. No satisfactory answer so far. Would this question be suitable for MathOverflow?"
People ask this in various places:
...

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4
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### A StackExchange website aimed at graduate students?

There has been a lot of discussion about questions that do not get answered on MSE, but are not considered 'research level' on MO and thus get closed. The problem seems to be that certain questions ...

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0
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### Between math stack exchange and mathoverflow

Suppose that I posted a question on mathstack exchange and no one has answered it. In my opinion it is not enough reason to post it on mathoverflow but if I also awarded a bounty and still didn't get ...

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0
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### Can I migrate this question about the divergence of an infinite product to Mathoverflow?

I thought this problem was just an homework-level but it turned out neither two of my professors in the area of analysis nor users active in mathstackexchange could give me a complete solution. The ...

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0
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### Button for cross posts to/from Math SE

People explained me that it is possible to ask same questions in Math SE and MO, and I did this from time to time. I think it's very important to have this possibility, because often you haven't ...

9
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### Appropriateness of question on delay differential equations

Would my question below, posted on Mathematics Stack Exchange in May 2015 and having received no answers, just a couple of upvotes, be appropriate in level for MO? I recognize that cross posting is ...

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0
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### Can I ask a question here whose answer I did not get at math.stackexchange?

I have asked a question about solution of heat equation at math.stackexchange but no one answered. I think may be the question is too professional to be asked from learners. As this platform is for ...

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1
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### Is this question migratable to MO?

Is it worth migrating this question to MO, from math.SE?
It seems elementary but did not get any response on MSE even after 10 days.

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1
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### Cross posts to Math SE

Are cross posts to Math SE allowed? As in almost exactly the same text, just posted there. Of course the sites are meant for difference things, but still just wondering. And if yes, should one link ...

4
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0
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### Migrating question from Math SE

I posted this question on Math SE a month ago but it has had no responses even though I also placed a bounty on it.
Whilst it is at graduate level, I'm unsure whether to ask it here since the ...

4
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0
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### Is this measure theory question suitable for MO?

A moderator at Mathematics StackExchange asks if this question would be suitable for migration to MO: https://math.stackexchange.com/questions/1331258/using-a-sequence-of-measures-to-create-simple-...

4
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0
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### I want to post a question on MathOverflow, but is it suitable?

I posted a question "A question on the remainders of integer division" on Mathematics one week ago. There is not any answer until now.
I do not think it is a question of professional level, but it ...

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2
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### Can we migrate users with their questions?

If a question is migrated from MO to MSE, would (or should) it be possible to automatically create the user an account at MSE and link it to the one at MO if they don't have an MSE account yet?
I don'...

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1
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### Why is "what is the difference between mathoverflow and math.stackexchange?" not prominently displayed?

It is a truth not-quite-universally acknowledged that a newish Stack Exchange user in possession of the knowledge that there are two sites named "Math Overflow" and "Math.StackExchange" will be in ...

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0
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### Advice to young mathematicians question on Mathematics Stack Exchange

(I don't know if this is on-topic on MathOverflow-meta. In case it is not, please, let me know.)
I see that many active users of MathOverflow are not as active on Math Stack Exchange; for this reason,...

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1
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### This MSE question was rejected for a migration on MO. Are you agree with this decision?

One month ago, I've asked the following question on MSE:
Is the left regular representation of an algebra, always faithful?
Up to now, this question has received 5 upvotes but no answer.
...

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0
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### On a question previously posted on Math .SE

Some days ago I have asked this question but I got no response. Will it be ok if I post this question in this site (I am asking this because crossposting isn't generally welcomed in this site)? Also ...

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17
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### Interesting (and not sufficiently answered) questions on math.SE

In light of the generally positive response to this meta-thread, I am creating this to help advertise (and hopefully fully resolve) "interesting" questions on math.SE. I'm not really certain what the ...

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3
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### Creating a "math.SE needs your help" thread

From time to time questions get asked on math.SE which may be quite suitable for MO. Given the current climate of math.SE, such questions may not receive the attention they are due: e.g., they ...

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0
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### Are these questions of mine, (seemingly too hard for MSE?), suitable for MO?

The questions at issue are this and this. If they get no answer even after the end of bounties, might I post to MO?
And how about evaluating $\displaystyle \sum_{m=0}^\infty \sum_{n=1}^\infty \frac{(-...

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### Encouraging patience on cross-posts

I realize that there has been a lot of discussion about cross-posting an migrating between MO and MSE. It seems to me that it is common for someone to be unsure on whether a question is an MSE ...

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2
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### What to do about question which are inappropriately migrated from MSE to MO?

This question has been migrated from MSE by a moderator as well as closed for being off-topic. As I recall, MSE consider to have in principle a scope that encompasses the scope of MO (i.e. all math ...

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0
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### Can I migrate this question to Mathoverflow?

I asked the question
"Which sets occur as boundaries of other sets in topological spaces?"
on MathStackExchange on June 23, thinking that the answer is probably known, but there are no answers yet. ...

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1
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### the correct way to "cross-post"?

Obviously is to not cross-post at all. If I asked a question on Math.SE the crickets chirp, how do I move it to MO? Or rephrase in an acceptable way?
I think we've all done it one or twice asked a ...

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### I can't understand the answers

I found myself in a slightly awkward situation.
"Working" (hobby) on group conjugation I learnt about quandles and I finally managed to formulate some questions of some of the issues that interest me ...

26
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### Should I start posting my questions on MO?

I have been a member of MO and of math.SE for a long time now. My participation in MO has been mainly lurking because I am not a researcher but a student who aims to become one. So, logically, I have ...

10
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1
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### posting an unanswered Math.SE question on MathOverflow

I have a question on Math.SE which hasn't received any responses. Is it alright to repost it to MathOverflow? If so, how long should I wait before doing so?

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6
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### Homework and migrating to math.se

As many people have noticed, one of the main functions of math.se is to be a place for students to get other people to do their homework for them. Obviously we do not want to facilitate such cheating....

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### Potential "technical" obstacle to migrations, and suggestion for a solution

Practical advice: If you want to/vote to migrate something to another site (especially math.SE) please make sure that at least one of the tags on the question exists on the target site (math.SE). ...

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2
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### Any other site besides mathoverflow and mathematics stackexchange?

I know the differences between mathoverflow and math-stack but I have been wondering:
Are there legitimate mathematical questions that would not get answered at math-stack because there is no ...

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3
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### Comment template for questions more appropriate for MSE

I think it would be nice to have a comment template that everyone could use when a (new) user asks a question on the site which is clearly more appropriate for MSE. Here's what I've been using today:
...