# All Questions

427 questions with no upvoted or accepted answers
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1 vote
205 views

### What do you see to upvote an answer?

Question is as in the title? What makes you to up vote an answer? Most of my answers are with $0$ upvotes. I am trying to understand the reason. One of the reasons could be that mathematics that I ...
• 5,223
1 vote
212 views

### Area 51 Proposal: Math Challenges

On September 1st, I started a proposal on Area 51, for users to share, discuss and answer mathematical challenges that they have. I did this because I felt that these types of problems have no place ...
1 vote
123 views

### Ability to flag for migration to other stackoverflow sites

Currently on mathoverflow, flags can be set for questions to be migrated to meta.mathoverflow, math.stackexchange, and stats.stackexchange. However, there are often questions that belong on other ...
• 4,661
1 vote
174 views

### Is MathOverflow missing a tag for ODEs?

TL;DR: Is there a tag which is intended (only) for ordinary differential equations? If not, should there be one? The situation with the tags related to ODEs seems a bit unclear to me. AFAICT there is ...
• 4,475
1 vote
112 views

### Recommending to move the question to another site

I am trying to recommend to move the question to another SE site. When I press the corresponding button, the menu pops up which offers me choices: meta, MathSE, stats. And no more choices. How can I ...
1 vote
200 views

### Synonym by a moderator which needs approval?

When I look at list of tag synonyms I see there a pending synonym rsk-correspondence $\to$ robinson-schensted-knuth and François G. Dorais♦ is listed as the creator. You can also see that this synonym ...
• 4,475
1 vote
77 views

### Does it make sense to have both "surfaces" and "curves-and-surfaces" tags?

I have noticed that there currently exist tags surfaces (with description "A surface is a two-dimensional topological manifold. The term can also be used to describe a smooth surface, depending on the ...
• 4,720
1 vote
78 views

### Accepting an answer to a closed question

To my surprise I discovered that I can accept an answer to my question that has been closed. I am not sure whether it is "good" or "bad", my question is whether it is an intended feature and if yes, ...
• 16.2k
1 vote
66 views

Simple question: should the tagging of a question cover answers? Suppose I asked a question about a mathematical problem and in the answers contained for example: pointers to literature algorithms ...
• 11.1k
1 vote
107 views

### What should I do if I want to ask an almost duplicate question?

There already exists a question very like the one I want to ask, with a very partial answer by the OP. I want to ask the same question but restricted to a special case, for which I hope more can be ...
• 151
1 vote
102 views

I'm so sorry, but I got logged out of my account: https://mathoverflow.net/users/10290/erin-carmody I tried to log back in but have changed my email several times... It might be an impossible task. ...
1 vote
206 views

Yesterday I asked a question seeking published references studying popular games, to start building up an undergraduate research program. Today I woke up to find it had been made community wiki. Now, ...
• 22.3k
1 vote
208 views

### Migration site list lacks entries

The question What is the integral of temperature over space called? obviously belongs elsewhere. Most probably the proper place is physics.SE, but in any case not here on meta, not on math.SE, and not ...
• 16.2k
1 vote
40 views

### Should I accept an answer to the "concrete" part of my question and ask another one about the "vague part"?

Suppose I am trying to prove a certain statement $S$ and find that a certain plausible statement $T$ implies $S$. However, I don't think that they are equivalent, and so there are possibly other ...
• 4,845
1 vote
67 views

### Can one un-(vote to close) a question without voting to reopen?

Scenario (and it actually happened): I was first to vote to close a question as too broad; OP modified the question in such way that my objection did not apply anymore; this modification resulted in ...
• 16.2k
1 vote
176 views

### Why do we need the general-mathematics tag?

I recently came across the general-mathematics tag. It has no usage guidelines, nor do I think it should exist. Do any of you know the historic reasons for its existence, or think it should stay as it ...
• 3,200
1 vote
193 views

• 157
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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 ...
124 views

### 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 ...
228 views

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/...
• 20.7k
78 views

### 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 \$+\...
• 8,464
97 views

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 ...
90 views

### 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?
• 16.2k
186 views

### 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 ...
• 8,464
106 views

### 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)
• 3,905
83 views

### "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 &...
• 4,661