# All Questions

1,876
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### Are questions about mathematical writing acceptable on the main site?

I have a question concerning mathematical writing, a draft of which is posted below if you are interested. The question I wish to ask on Meta however is about whether questions concerning mathematical ...

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2
answers

304
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### Not accepting answers

In my opinion, there is a moral obligation on those asking questions to do something with the answers: Either accept one, or to explain why none of the answers is satisfactory. I do not see this ...

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1
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169
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### The meaning of the badge "Sportsmanship"

I would appreciate if you explain on the meaning of the badge "Sportmanship".
It is described as below but I can not understand what does it mean. May you describe this badge in an equivalent words?...

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1
answer

118
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### Is there a best day of the week for offering a bounty in MathOverflow?

I'm thinking that the weekend is not a good time to offer a bounty because people are less likely to be at work. So fewer people get to see the offer before it expires.

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3
answers

755
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### Down vote without comment

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 ...

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1
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421
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### Would the question "Fourier series is to Fourier transform what Laurent series is to …?" be on topic at MO?

I asked the question Fourier series is to Fourier transform what Laurent series is to …? over at MSE, since that's where my questions usually belong to. But since I couldn't find any resources on it, ...

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1
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85
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### What about bountying a meta question?

While I do agree in principle that anything meta should not have anything to do with reputation changes, there might still be cases when one would like to stimulate more activity with some difficult ...

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1
answer

112
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### Possible bug in migration

Moving back my question to MO
I have given link for question as References on Gerbes. This I have done using my computer.
Now when I check it from my iPad It is taking me back to meta question.
I ...

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1
answer

355
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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 ...

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1
answer

195
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### How do I login to my old MathOverflow account?

I realise that this question has been asked in various forms already, but I still have a problem.
I have an old MathOverflow account
https://mathoverflow.net/users/6827/konstantin-ardakov
and a ...

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0
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140
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### Announcement: A stacks project for category theory

I'm releasing today The Clowder Project, a tag-based wiki and reference for category theory powered by Gerby.
I plan to eventually make it into a comprehensive resource for category theory, in the ...

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182
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### Incentivizing ‘bad’ questions

As a 5+ year member of MO, I remember the old days when upvotes on questions only netted you 5 points as opposed to the current 10.
While I was generally glad to see good questions being rewarded in a ...

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211
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### Is asking for the status of Vandiver's conjecture suitable for MO?

I wonder what the current status of Vandiver's conjecture in number theory is? An internet search revealed the paper "Vandiver's conjecture via K-theory" by Alexander Stolin from 2020 on the ...

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128
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### Should the dots used in lambda-calculus notation be typographically treated the way binary relation and binary operation symbols are?

Within this question we find the notation $\lambda f . \lambda g . \lambda x.f(g\ x)$, and that causes me to wonder about a point of LaTeX and MathJax usage.
The code ...

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0
answers

210
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### May I Offer Money to People Who Answer My Question on MathOverflow?

Erdos and others have offered prize money to people who answered their questions.
May I offer money to people who answer my questions on MathOverFlow?

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123
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### Is deleting posts a good practice?

In principle, MO posts can be cited in papers; on the other hand, MO posts get deleted sometimes. There is a risk, then, of referring a MO post which no longer exists. Is deleting posts a good ...

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0
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192
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### Difference between Mathematics SE and MathOverflow

If I post a question that I invented myself on Mathematics SE, I receive comments like "did you do homework?" and, eventually, "why do you ask if you know?". Fair enough. It seems ...

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128
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### Gaining points for posting

How do I earn 50 points to comment if I am not allowed to comment or post? So my problem is as described as far you can see.

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133
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### Is this question about partition numbers too broad/vague?

Here's my proposed question (edit: now posted) (edit 2: posted version now edited):
I have found an algorithm for counting partitions, and I've been able to express it into a mathematical formula, $P(...

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0
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164
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### Asking if a post about a mathematical characterization of gravitational geons can be potentially interesting for the main site MathOverflow

I would like to ask about if a question about the following subject can be potentially interesting and on topic on MathOverflow. I would like to ask on the main site of MathOverflow about the ...

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0
answers

100
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### Hinting votes for CW contributions

I would like to learn about opinions about visually indicating votes for contributions to community wiki; what I have in mind is something analogous to the green button in the "menue-line" ...

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128
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### Is this partial differential equation on topic for Mathoverflow?

I came across this differential equation. I'm not sure if it's research level, but I think it might be:
$$u\frac{\partial}{\partial u}\left(u\frac{\partial f}{\partial u}\right) + v\frac{\partial}{\...

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0
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243
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### "overestimates topoi" and research level

I wonder now and then, why this question is still open
Did Grothendieck overestimate topoi?
Usually, MO's members tend to be very strict about what is and what isn't a good question.
But why is this ...

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0
answers

139
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### Unable to delete this post

I have been wanting to delete this post for quite sometime. Unfortunately a user already answered and my reputation is so low that I can’t accept or delete it.
Note my original question is nothing ...

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230
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### Discouraging (Some) Upvotes

I'm tagging this as "discussion", not as a feature request, because I am quite agnostic about whether it's a good idea.
That said: My subjective impression is that lately a lot of very bad/...

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0
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80
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### Can I ask for advice or opinions about the choice of a variant of a theory?

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 $+\...

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0
answers

694
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### Why did my profile picture disappear?

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?

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0
answers

187
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### I want to answer a closed question

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 ...

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0
answers

111
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### Can I delete one of my posts that has been closed as off topic and received an answer with positive up-vote?

Can I delete one of my posts that has been closed as off topic and received an answer with positive up-vote?
Should I delete all my posts that has been closed as off topic? (with/out answer)

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0
answers

88
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### "Voting corrected" seems incomplete

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 &...

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213
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### Would asking this question be permissible on the main site?

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 ...

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0
answers

137
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### Need details or clarity

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.

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105
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### Is my question for Math Overflow?

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 ...

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67
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### Potential rendering issue for formulas

when I entered the following
$$\pmb{ \frac{d_+^n}{dx_+^n}}:= \left(1, \frac{d^1}{dx^1},\,\dots,\,\frac{d^{n-2}}{dx^{n-2}},\,1\right)$$
I observed that the defined fraction has an unsharp ...

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0
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97
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### Setting up math Q/A site in foreign language

Now that my college shifted to online education because of the coronavirus, I would like to setup a MathOverflow style site in Hungarian where I could post exercises, and students could comment, post ...

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134
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### Would this soft question be appropriate?

A few weeks back on the Math Stack Exchange, I asked this question about "interesting" PDEs. It got (no answers and) some deserved criticism, so I opened a discussion on the Meta there and made some ...

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119
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### A questions about "on hold" status of a question and about "closed" status

I have a question that´s been put "on hold". And I have some questions.
Who can see that this question is "on hold"? Can that see all users of the site or even some people who ...

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0
answers

105
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### MO links chopped in gmail pdf viewer

Currently I am preparing the text for a paper (together with two coauthors) where we cite help from MO on two occasions. I am doing this using the cite button. It ...

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0
answers

68
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### Is it bad practice to edit my own question with details from the paper provided in the top answer?

I asked a question and received a helpful answer that showed me work that I did not know how to search for. The answer was a link to the author's paper and some context on its relevance. While I could ...

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0
answers

97
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### reminder for comments/responses

Suppose a user commented on my post and due to some reason I overlooked and then forgot.
As it is my question, the one who responded for my question would not care to write another comment if I do ...

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0
answers

172
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### Should there be Anonymous Comments?

I currently got a downvote for my question Making a Graph Eulerian for Applying TSP Heuristics, but unfortunately the downvoter didn't leave a comment explaining what the motivation was, thus ...

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0
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117
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### i can’t log in the ios app

I can’t login the ios app, how to fix this problem? Neither the overflow nor the exchange.

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0
answers

72
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### Would this question be on topic?

I'm independently working on some research, and would like to see if there are any other papers on this topic. Can I ask a question on the main site, with a brief description of my work, to see what ...

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0
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117
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### Is this post incompatible with its tags?

Is the following question incompatible with its tags? I really do not understand the reason that some participants voted to closing this question as off topic question:
PhD dissertations that ...

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0
answers

53
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### What if I want to increase bounty by somebody else?

I found an exciting question that somebody gave bounty of 50, and I would like to increase it. Seems there is no way to do it. Why?
Also, I never tried this so I don't know: can I increase my own ...

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0
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116
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### "Singular Perturbation" is not among tags

Can I ask MO to define a new tag "Singular perturbation". I did not find this tag among the tag list.
Thank you

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0
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107
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### Another close reason: "subsumed"?

This happened few hours ago: the question Series involving gamma function about the sum of a specific series, probably not research level, was followed by another one, Series involving factorials ...

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0
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181
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### Big Ideas and Proofs Originating on StackExchange or Overflow? [duplicate]

Just a random, fun question I was kind of curious about; sorry if I tagged it incorrectly.
I'm wondering if there are any famous StackExchange or Overflow posts (math, physics, comp sci etc) where ...

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0
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90
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### "Conley index " as a tag

Is there a tag which can be related to methods on Conley index theory?I could not find a tag with this title.

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0
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85
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### Difficulties merging accounts

hopefully this is an MO.meta appropriate topic.
I have tried merging two accounts (I created the alternate account one day when I forgot my password and wanted to ask a quick question on mobile) and ...