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The purpose of this thread is to help focus the attention of the community on posts that may require exceptional handling. This includes requests for reopen and undeletion votes. A request should be posted as an answer below.

Please do not use this thread to engage in debates on contentious matters (e.g. reasons for closure). That should be done in a separate linked thread. The goal is to keep this meta thread free of tension, so that everyone feels comfortable posting here. Please be polite, and respect the many different viewpoints in our diverse community.

To inform readers of the current (and past) states of the targeted post, please append tags such [REOPENED,RECLOSED] or [UNDELETED] at the start of the answer.

Beware that "short" requests such as "request reopening of <link>" may be automatically converted to comments by the SE software, so you may need to write more (e.g. why you think that the question should be reopened or undeleted).

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  • $\begingroup$ For reopen requests that are run-of-the-mill (e.g. aren't meant to debate reasons for closure), do you think it would make sense to have a generic reopen-request thread, so that we don't end up with hundreds or thousands of questions on such. Then each request would simply be an answer in the reopen thread, and it being bumped would get the same exposure as a new question. Thoughts? Unless I hear any objections I will create such a thread. $\endgroup$ Oct 24 '12 at 17:11
  • $\begingroup$ @Bill: Yes. This crossed my mind after posting this. I agree that it would be a good idea. $\endgroup$
    – Asaf Karagila Mod
    Oct 24 '12 at 17:37
  • $\begingroup$ I didn't expect that you would edit this specific question into the general question (I was writing another). But since it is done, we may as well go with it. $\endgroup$ Oct 24 '12 at 18:28
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    $\begingroup$ @Bill: I saw no reason to wait with that idea. There was no actual discussion in this thread anyway. $\endgroup$
    – Asaf Karagila Mod
    Oct 24 '12 at 18:34
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    $\begingroup$ @Gerry: The solution would be to add a few words, I suppose. For example why it should be reopened. $\endgroup$
    – Asaf Karagila Mod
    Nov 9 '12 at 12:16
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    $\begingroup$ @Asaf, I opted for cursing the darkness rather than lighting a candle. Anyway, the question has been reopened. $\endgroup$ Nov 9 '12 at 21:54
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    $\begingroup$ @Gerry: Darkness is just the light's way of proving the empty set exists. $\endgroup$
    – Asaf Karagila Mod
    Nov 9 '12 at 21:55
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    $\begingroup$ @Willie: I think that we should delete old reopening requests and perhaps have one post/additional thread for indexing them. I should also think that any request older than $n$ days for some reasonable $n$ should be deleted. If something has not been reopened and the initial votes expired... well, it makes sense to conclude that there aren't that many people interested in reopening. $\endgroup$
    – Asaf Karagila Mod
    Nov 30 '12 at 9:49
  • 4
    $\begingroup$ @Willie It's probably useful to have some nontrivial history remain so that folks $\rm < 10K$ can gain some idea about what types of questions do get reopened, and what types don't. By quickly scanning the requests it might help to convey some idea of the community consensus on marginal topics. To keep the unopened requests at the top of the active sort, they could easily be bumped if there is still interest. $\endgroup$ Dec 1 '12 at 1:44
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    $\begingroup$ @Belgi: This is why I prefer to browse Meta with answers sorted by activity. $\endgroup$
    – user856
    Jan 5 '13 at 21:38
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    $\begingroup$ @Belgi Sorting by activity solves the problem. I just bumped the only active discussion to the top with an edit. There are two requests dated by November 2012, which I guess are no longer ongoing conversations (but anyone so inclined can bump them; it's a CW). $\endgroup$
    – user53153
    Jan 5 '13 at 22:07
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    $\begingroup$ Thanks for the workaround, I still think theres no reasons for this to log all reopen request that were/will be made $\endgroup$
    – Belgi
    Jan 5 '13 at 22:10
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    $\begingroup$ Per the (short) discussion in this deleted meta post, I have edited this thread to support requests for votes to undelete as well as votes to reopen. $\endgroup$
    – Alexander Gruber Mod
    Jul 13 '14 at 14:59
  • 1
    $\begingroup$ The question got protected again; I'd assume, but cannot check, since it fulfills criteria for autoprotection The simplest way out would be to restart a question of this form. IMO this would be desirable regardless the protection issue. $\endgroup$
    – quid Mod
    Oct 17 '14 at 13:58
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    $\begingroup$ @quid: Yes, yes, I see that protection triggering every time I remove it. But I gave it some more thought, and for now it seems harmless after all. $\endgroup$
    – Asaf Karagila Mod
    Oct 17 '14 at 14:06

213 Answers 213

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[REOPENED]

I would like to see this question reopened. It is asking for the definition of something, and the OP has responded to a request for more clarification of where the definition cropped up. Therefore I see no reason for this question to remain closed.

(Although, in general I find it extremely bad form to close a question asking "what is the definition of X?". When such questions are closed it is often because those voting to close have never come across the term before, which is not one of the valid close reasons.)

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  • $\begingroup$ In general I agree with not closing question about "What is X". But in this case, it's easily conceivable that multiple definitions could be given -- whence my close vote. With the reference added, it should be fine. $\endgroup$
    – Lord_Farin
    Oct 24 '13 at 10:03
  • $\begingroup$ @Lord_Farin My point is that it is easily conceivable that multiple definitions could be given. But until someone comes along who actually knows something and says "multiple definitions could be given" then the question should not be closed. $\endgroup$
    – user1729
    Oct 24 '13 at 10:59
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[REOPENED]

I would like to request that this post be re-opened. (It is at present well on its way.) It was originally closed for missing context/details, as the OP had not shown any effort or shared any thoughts on the problem. However, the OP has now added an attempt at the problem (which is very nearly correct), so the question should be re-opened.

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Will you please to reopen https://math.stackexchange.com/questions/511326/specific-advice-tips-to-streamline-studying-math by virtue of its upvotes and those on my Answer.

Will you please to appreciate the fact that most of the downvotes in its Meta thread (http://meta.math.stackexchange.com/questions/11145/how-to-adapt-or-emend-specific-advice-tips-to-streamline-studying-math) occurred before my edit to my question, and observe Lord_Farin's gracious comment underneath his answer thereunder.

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  • $\begingroup$ Relevant: Being successful at mathematics is about good communication as well as good ideas. I feel that this question is interesting, but presented poorly. It is just rather convoluted and too wordy. But I have voted to re-open, because I don't think that that is a valid reason for a question to be kept closed. $\endgroup$
    – user1729
    Oct 26 '13 at 13:21
  • $\begingroup$ @user1729: Thank you for your support. I've pruned the OP somewhat. Please feel free to edit if seasonable! $\endgroup$
    – NNOX Apps
    Oct 26 '13 at 14:02
  • $\begingroup$ I don't see how your edits have changed the fact that the question is extremely broad. $\endgroup$ Oct 26 '13 at 18:01
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    $\begingroup$ @TobiasKildetoft It may be broad, but it is also of general interest. Broad questions are frowned upon, but often are looked less critically if they are of general interest. For example: math.stackexchange.com/questions/71874/… is incredibly broad, as are many of the top-voted soft-questions. $\endgroup$
    – user1729
    Oct 28 '13 at 19:11
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[REOPENED] Thanks!

Please consider reopening Present a function with specific feature, about whether $f'(a)>0$ implies that $f$ is increasing.

People objected to the lack of context in the question, but my impression is that this is precisely the point of the question, that there is confusion about the concept itself, and some of the answers have indeed tried to address that.

I think the answers may be useful not just to the OP but others, and keeping the question open may be closer to the spirit of the site (This is indeed a generous reading of the situation, but I find it justified by the answers.)

(See also here for a similar discussion in meta at MO.)

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[REOPENED] Thanks.

This question was closed as "unclear what you're asking". At the time of closing, it had gone through multiple edit rounds, and had 4 answers.

In other words, it was perfectly clear to some what was being asked. It shouldn't have been closed in the first place.

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vote
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[REOPENED]

natural representation was put on hold as unclear. The author has clarified the question.

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1
vote
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[REOPENED]

The author of this question has added their thoughts on the problem as requested. It was originally closed with the "missing context" reason.

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[REOPENED]

This question was put on hold as unclear, since the term throdd and the abbreviation PBAC were not explained. I’ve added the definition of throdd from an earlier question by the same person and expanded the abbreviation, which I’ve encountered before. (It’s particular but arbitrarily chosen.)

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Please reopen https://math.stackexchange.com/questions/644699/whats-mathbbz-2-times-z-4-mathbbz-3-times-z-8-isomorphic-to-frale

I removed the darkred color but can add it back. Please notify me which is better. My questions are marked with numbers (1.) to (3.). Hence any color problems should now be settled.

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  • $\begingroup$ The question has since been deleted automatically. $\endgroup$
    – user61527
    Feb 5 '14 at 23:00
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[REOPENED] then [RECLOSED]. Current status: [DELETED]

I believe that this question should be re-opened. It was closed as being "unclear what your asking", but this has now been rectified.

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    $\begingroup$ The question is still a problem statement only, with no context, so even if it has been clarified it is still out of line with our expectations for questions. It seems bureaucratic to me to vote to reopen a question that still has a clear rationale for closing, when only one of several valid reasons for closing has been addressed. $\endgroup$ Mar 11 '14 at 18:54
  • $\begingroup$ @Carl Correction: it is "out of line with some users expectations". I see you cast the first vote to reclose it. Not very nice considering the above request. $\endgroup$ Mar 17 '14 at 3:50
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    $\begingroup$ @CarlMummert I think this is a bit petty. As questions go it isn't your usual off-the-shelf and out-of-the-book calculus question. The group theory tag is relatively responsible, and for a question like this it is unlikely that a full solution as opposed to a hint would be posted. $\endgroup$
    – user1729
    Mar 17 '14 at 9:18
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    $\begingroup$ @user1729: I am not sure that the current version of the question, after your edit, is what the original asker was asking math.stackexchange.com/posts/707140/revisions . For example, all mention of Ito's theorem is gone. I believe it should be up to the asker to clarify what they want to know, rather than for other users to interpret what we think the asker wants to know. The asker has not edited the question since it was put on hold. $\endgroup$ Mar 17 '14 at 11:37
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    $\begingroup$ @Bill Dubuque: I posted that comment long before the question was re-opened; there was no response here until after the question was reopened and re-closed (including when the post here was edited). We all have to work within the framework of the site and the willingness of others to discuss things. $\endgroup$ Mar 17 '14 at 11:39
  • $\begingroup$ @CarlMummert I hadn't noticed the omission of Ito's theorem from the edit - on the one hand it is perhaps not the question the OP had in mind, but on the other no other possible question either makes sense or has an answer...Most likely, Derek Holt's comment was sufficient and they won't return (why would they?). $\endgroup$
    – user1729
    Mar 17 '14 at 12:15
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    $\begingroup$ @user1729: if, as you suggest, the question the OP had in mind does not make sense or have an answer, I think it should be up to them to clarify it. If you or I had wanted to ask our own question, after all, we could have done it ourselves. If the asker won't return (which does seem plausible here), they are not going to accept any new answers in any case. To me, the absence of the OP is the main reason to let the question stay closed. In this case, though, I do wish that someone had commented much earlier to the OP about the need to clarify the question and include context $\endgroup$ Mar 18 '14 at 11:53
  • $\begingroup$ @CarlMummert The first comment asked for clarification, 2 minutes after the question was posted... $\endgroup$
    – user1729
    Mar 18 '14 at 11:56
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    $\begingroup$ @user1729: yes. I have no way to tell whether the OP deleted any comments. Assuming they did not, that request in the comments was never answered - which is a reason to wait to reopen the question. But I am saying I wish that, beyond asking for a definition, earlier comments had pointed out the other issues in the question. There was even a later comment "6 downvote, you are about to crucify him !!!" by another user, but nobody told the OP the likely reason for the downvotes was that the question itself needed to be improved, until I left one the following day, before the post was reopened. $\endgroup$ Mar 18 '14 at 12:02
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    $\begingroup$ My own motivation for voting to delete is that the person who asked the question - an unregistered account with 1 rep and no other activity - has been inactive since the question was asked. Perhaps they got what they wanted out of comments, as suggested above. If not, they can always become active again and ask in improved version of the question with some clarifications. $\endgroup$ Mar 24 '14 at 12:15
  • 2
    $\begingroup$ @user1729 Now it needs 2 more undelete votes. What a disgrace to the site that valid mathematical questions are being deleted. $\endgroup$ Mar 24 '14 at 23:17
  • $\begingroup$ I voted to undelete. $\endgroup$
    – MJD
    May 7 '14 at 15:36
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vote
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Please reopen https://math.stackexchange.com/q/696131/85079. I revised the question. Language and content are clear now. Closers didn't comment on what they were vexed about so I tried to guess.

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[REOPENED]

Please reopen If every convergent subsequence converges to $a$, then so does the original bounded sequence (Abbott p 58 q2.5.4 and q2.5.3b)

I revised the question. Language and content are clear now. I tried to guess what closers didn't understand because they didn't comment. Please write me if something needs to be bettered.

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    $\begingroup$ The reason for closure was explicitly given. No need to "guess" what it was. You already requested the original post to be undeleted and open. $\endgroup$ May 3 '14 at 15:31
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Will you please to reopen Intuition - Countable iff Surjection iff Injection [Velleman P310 Thm 7.1.5]?

I asked this separately from my other question strictly about the proof that is now deleted. It shouln't be esteemed a duplicate, because in addition to intuition, I'm also interested in a picture. For want of organisation and focus, I didn't want to ask about all three aspects in one question.

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Can someone please open https://math.stackexchange.com/q/787937/85100 ? I edited it just now. Please inform me on what's purported unclear?

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    $\begingroup$ What does it mean, "I want to intuit this (fetch)." What does it mean, "Are there illustrations?" That is what is unclear to me (well, that, and why anyone would need any intuition for $a-b\equiv-b\pmod a$). $\endgroup$ May 11 '14 at 5:22
  • $\begingroup$ This question has since been auto-deleted. $\endgroup$
    – user61527
    May 20 '14 at 22:10
1
vote
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[Re-opened]

The question Portia casket logic problem was incorrectly (I believe) marked as a duplicate. I guess no one noticed my comment to this effect, or my answer, which contradicts the accepted answer to the other question and should make the difference between the questions clear.

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vote
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[REOPENED]

I don't think that this question is actually a duplicate. The newer question begins with a function harmonic on the unit disk, while the linked question has a function harmonic on the whole space.

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1
vote
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[REOPENED]

I am requesting that this question be reopened. It was originally a mess (question and answer all in one), but has since been cleaned up.

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  • $\begingroup$ The question now has $4$ votes to close, all based on "missing context or details." I'd guess from people who don't see the fact that it's self-answered. $\endgroup$
    – user61527
    Jun 18 '14 at 21:27
  • $\begingroup$ @user61527: does that make a difference when the question is drafted in a way that immediately suggests closure? I am not convinced that we want to encourage self-answered questions; I have several concerns about them. But certainly we can expect them to be exceptional both in the drafting of the question and the drafting of the answer. $\endgroup$ Jun 19 '14 at 12:07
  • $\begingroup$ @CarlMummert I agree that questions like this should generally contain the answer in the question statement (or at a minimum clearly mark that they are self-answered), but I don't think that this is a reason for closure. $\endgroup$
    – user61527
    Jun 19 '14 at 18:19
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[REOPENED; RECLOSED]

I am requesting that this question be re-opened.

I think it is an interesting question. It remind me of model theory and of category theory - it is almost a meta-mathematical question. I have no idea if it can be answered but that is no reason for it to be closed. That is: it is a question that so far noone knows how to answer it, but that does not mean that it does not admit an answer.

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  • $\begingroup$ Would the downvoter care to comment? I want to hear your opinion :-) $\endgroup$
    – user1729
    Jun 13 '14 at 11:22
  • $\begingroup$ The question now has $4$ reopen votes. $\endgroup$
    – user61527
    Jun 14 '14 at 22:54
  • $\begingroup$ And now at $4$ votes to close. $\endgroup$
    – user61527
    Jun 19 '14 at 2:55
1
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[REOPENED; RECLOSED]

This question should be reopened. It originally contained an opinion that has since been deleted from it, and apparently in consequence of that now-deleted opinion it was closed as an opinion-based question. Per Manne's comment under the question is a good answer, but it cannot be posted as an answer.

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    $\begingroup$ If 'How would you change math notation' is not 'primarily opinion-based', I don't know what is. $\endgroup$
    – Grigory M
    Jul 13 '14 at 19:40
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    $\begingroup$ I agree with reopening this question, but I think it ought to be made CW (and probably tagged big-list). $\endgroup$
    – user61527
    Jul 13 '14 at 21:39
  • $\begingroup$ Two people are reported to have voted to re-open this question after it was closed for the second time. I am told that I cannot vote to reopen it again. Are only those who didn't vote to reopen it the first time allowed to vote now? $\endgroup$ Jul 14 '14 at 19:57
  • $\begingroup$ @Michael: This is how I remember the behavior for quite a long time now. You get one close vote, you get one reopen vote; you get infinite delete and undelete votes (although using all of them may pose a challenge to modern physics, since there is a 30 delete votes daily limit). $\endgroup$
    – Asaf Karagila Mod
    Jul 14 '14 at 22:29
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[REOPENED]

I would like to request to open this thread https://math.stackexchange.com/questions/886640/linear-transformation-representing-the-derivative-of-map.

The given reason was - "This question is missing context or other details: Please improve the question by providing additional context, which ideally includes your thoughts on the problem and any attempts you have made to solve it. This information helps others identify where you have difficulties and helps them write answers appropriate to your experience level." – 900 sit-ups a day, Ivo Terek, rogerl, le gâteau au fromage, Adam Hughes

However, I had already answered my own question. I wanted people to comment on my answer. I had already put down my thoughts below and they put it on hold for the question lacking the same! They should not have done what they did!

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Please vote for undelete the following question: https://math.stackexchange.com/questions/601765/dimension-and-multiplicity-of-modules-over-rings-not-generated-in-degree-one which I think can be of interest for the future users of M.SE.

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  • $\begingroup$ Did you contact the author of the question (since they chose to delete it several months ago)? $\endgroup$
    – Did
    Sep 1 '14 at 19:35
  • $\begingroup$ @Did Actually I can't see who is the author of the question. (Only users rated >10k can see a deleted question/answer.) $\endgroup$
    – user26857
    Sep 1 '14 at 19:39
  • $\begingroup$ But you do see the question, right (since you want it to be reopened)? $\endgroup$
    – Did
    Sep 1 '14 at 19:42
  • $\begingroup$ @Did Of course not, but I've commented on this question some time ago and I remember that the question was interesting enough. $\endgroup$
    – user26857
    Sep 1 '14 at 19:44
  • $\begingroup$ There is no comment whatsoever on this question (which was deleted on April, 5). Not sure I am following what is going on here... $\endgroup$
    – Did
    Sep 1 '14 at 19:46
  • $\begingroup$ @Did The most probably I've deleted my comment after a while if there wasn't any feedback from the OP. $\endgroup$
    – user26857
    Sep 1 '14 at 19:47
  • $\begingroup$ @Did: Note that there is a deleted answer, by a deleted user, whose user number corresponds to this user's username. I am guessing this is someone who went away and came back for one reason or another. Which is how they know about this question. $\endgroup$
    – Asaf Karagila Mod
    Sep 1 '14 at 20:46
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This question was closed and there are two votes to delete. If it is deleted, then my answer gets deleted with it. I think my answer contributes useful mathematical content to m.se, and I ask you not to vote to delete.

If the question does get deleted, consider this a request for undeletion.

EDIT: Never mind. Question got deleted, so I reposted it myself, with my answer.

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    $\begingroup$ Needs 2 more undelete votes. How very sad that a small group of users are repeatedly destroying valuable site content in this manner. Yet another major flaw in the SE model. $\endgroup$ Sep 5 '14 at 2:43
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    $\begingroup$ It's a PSQ from what looks like a throwaway account. The fact that the answer doesn't match any of the options specified by the OP means that the OP misstated their intended question, or that it was misunderstood. In either case, we'll never know, apart from the miniscule chance that the OP returns to clarify. In that case, I would welcome an undeletion. Otherwise, deleting it seems like reasonable cleanup to me (it is voted -5 after all) $\endgroup$ Sep 5 '14 at 3:15
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    $\begingroup$ @BillDubuque Luckily there is a model without this flaw. $\endgroup$
    – user147263
    Sep 5 '14 at 3:39
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    $\begingroup$ @Thursday Yahoo! Glad to see that you found a more appropriate forum for your campaign. $\endgroup$ Sep 5 '14 at 5:35
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    $\begingroup$ I was one of the deleters. This was a tough call. Gerry's answer is most certainly worth keeping, but the question was abysmal. Reposting was a very good idea! Hopefully other people who feel that their deleted answers should stay on the site follow suit $\endgroup$ Sep 5 '14 at 6:16
  • $\begingroup$ How does the reposted question statement differ from the reposted one? Could someone shed some light on this for this measly 4-figure rep user? $\endgroup$
    – Daniel R
    Sep 5 '14 at 6:57
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    $\begingroup$ @Daniel, at the time it was deleted, it read, "7 friends went to see a movie, at the time of interval they went away, in how many ways when they come back can seat that no 2 adjacent people will not seat together?" $\endgroup$ Sep 5 '14 at 7:21
  • 1
    $\begingroup$ @JyrkiLahtonen Could you explain why you think reposting a more or less verbatim copy of a question that you found was worthy of a delete vote is a very good idea? $\endgroup$
    – Daniel R
    Sep 5 '14 at 7:34
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    $\begingroup$ I'm legitimately trying to understand why you would have gone to all this trouble, and not bothered to edit the actual question into something more comprehensible? The authors original question no longer matters, it's now your question and a self-answer. I can't see what is gained by not just making it, at least, a slightly better question. $\endgroup$
    – Scott H.
    Sep 5 '14 at 8:57
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    $\begingroup$ @Scott, I thought I did make it a better question. Feel free to edit and make it even better. $\endgroup$ Sep 5 '14 at 9:18
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    $\begingroup$ @DanielR: A good question - in the sense that it isn't crystal clear. The original version had many tell-tale signs of a very bad question. One of the commenters even suggested that it was sent from an exam with a smartphone (broken/telegraph English tips that way, but is inconclusive as it came from a non-native speaker). Deleting such a question is then more about sending a signal. Reposting takes away the urgency/potential cheating aspect. Also Gerry can be relied upon to produce readable English. But, if your point was to somehow question my motives, then you may have a point... $\endgroup$ Sep 5 '14 at 12:13
  • $\begingroup$ (cont'd) It IS a lot easier to approve of a question when it carries a Gerry Myerson stamp of approval. May be it shouldn't play a role, but it does. Sue me? $\endgroup$ Sep 5 '14 at 12:15
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[UNDELETED, REOPENED]

I'd like to ask for How is greater than defined for real numbers? to be undeleted.

It is true that the phrasing is very poor, and the question itself has a very negative score. However I think that the answers, and the many comments below them, have a lot of information that is worth preserving.

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  • $\begingroup$ I think the question would need to be edited first, and the comments with refer to the orginal form deleted. They detract from the maths. So in principle I agree, but I won't vote to reopen yet. $\endgroup$
    – user1729
    Oct 16 '14 at 12:28
  • $\begingroup$ I didn't ask for it to be reopened. :-) But if someone sees a reasonable way to edit, and flags the comments which need to be deleted, that would be a good idea. $\endgroup$
    – Asaf Karagila Mod
    Oct 16 '14 at 12:31
  • $\begingroup$ I have deleted the silly stuff in the question, and flagged the relevant comments. Perhaps someone could add some context? But, well, I do not know if it is really necessary for definition questions... $\endgroup$
    – user1729
    Oct 16 '14 at 12:55
  • 1
    $\begingroup$ Asaf, @user1729 I have added a few sentences which could be considered as adding context. (Per the recommendation to improve questions, which I want them to stay on the site.) Feel free to rollback, if you disagree with the changes. (Or, perhaps better option, feel free to improve questions further.) $\endgroup$ Oct 16 '14 at 13:41
  • $\begingroup$ @Martin I think your edit is above and beyond what I'd consider necessary. I've cast the third-and-final reopen vote. I would still like those comments to be removed though. $\endgroup$
    – user1729
    Oct 16 '14 at 14:03
  • $\begingroup$ @user1729: You continuously confuse reopening and undeleting. But it's fine, I guess. :-P $\endgroup$
    – Asaf Karagila Mod
    Oct 16 '14 at 14:43
  • $\begingroup$ @Asaf Words are not my thing. Although...I did spend much of my PhD studying words (in group theory)... $\endgroup$
    – user1729
    Oct 16 '14 at 14:45
  • $\begingroup$ (Just to be clear: I meant undelete, not reopen. What I say is not always what I mean. Which make writing papers...interesting...) $\endgroup$
    – user1729
    Oct 16 '14 at 14:57
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[REOPENED]

This question should never have been put on hold in the first place, as it was obvious that the OP was asking for verification of the arguments. This request has now been explicitly added, and the question should be reopened.

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    $\begingroup$ I do not understand the downvotes here. How is this contentious?!? $\endgroup$
    – user1729
    Oct 28 '14 at 19:14
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[REOPENED]

The question Monty Hall Problem was closed as duplicate.

It does however not ask for the usual Monty Hall Problem but a variant thereof. There is some very small room of interpretation what is meant exactly but I feel it is clear enough and is answerable.

The answer is not obvious in my opinion (there are other variants that are simpler) and while it is discussed on the linked to question it is somewhat implict and in an answer way down by votes; I feel at least this should have been indicated. But actually I feel the question should be answered on its own.

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[REOPENED]

The question isotopy of homeomorphisms of a torus was edited to make it a viable mathematical question, which now can be read as "How to show that a homeomorphism of a torus which is homotopic to the identity is isotopic to the identity?". This is now a good question, which fits into the general framework of topological rigidity problems and should be reopened.

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[REOPENED]

I don't think Unbounded family of functions from $\mathbb{N}$ to $\mathbb{N}$ should be closed as a duplicate of https://math.stackexchange.com/questions/243044/the-family-of-all-unbounded-functions-on-natural-numbers-is-uncountable

The main difference (between the current versions) is that one asks to show that any unbounded family is uncountable. (In the other words, this is asking for the proof that the $\mathfrak b\ge\aleph_1$, where $\mathfrak b$ denotes the bounding number.) The other one asks to show that the family of all unbounded functions is uncountable. These are clearly two different questions.

In addition to that, the first question asks about $\leq^*$-unbounded families. The other does not specify this, but I would expect that it asks about the usual notion of unbounded function.

It is quite probable that the OP wanted to post the same question, but the two questions are definitely not the same (the way they are worded).

Review on the question I have mentioned above is already finished. With the result leave closed.

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[UNDELETED][REDELETED][REUNDELETED]

https://math.stackexchange.com/questions/432742/calculate-start-middle-and-end-of-any-number was closed as "unclear what you are asking" after it had an answer accepted by the poster (so it was clear to at least one person what OP was asking). Then a year-and-a-half later it was deleted, despite having an upvoted, accepted answer. I have voted to undelete.

EDIT: Question (and answer) redeleted (after I edited to clarify question). I have (re)voted to re-undelete.

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I'd like to request that this post be reopened. It was closed unilaterally as off-topic by a (then-)moderator, and while I agree that it is arguably off-topic, I also feel that it would be better located at Physics.SE, rather than just stuck in the limbo of closed posts at Math.SE.

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    $\begingroup$ Why on earth do you want that post reopened? It is not on-topic here, and we should certainly not migrate a post of such low quality to physics. $\endgroup$ Nov 27 '13 at 10:00
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[REOPENED]

Please reopen Are these sets with orbits subgroups of $S_A$ = set of all permutations of A? - Fraleigh p. 86 8.41-8.43.

My questions are marked with numbers (1.) to (3.) and I already updated the question. Therefore I don't see what's 'unclear what you're asking'?

The people who closed did not comment on what's 'unclear'.

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