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### Requests for Reopen & Undeletion Votes (volume 07/2018 - today)

The purpose of this thread is to help focus the attention of the community on posts that may require reopen and undeletion votes. A request should be posted as an answer below (one request per answer)....
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### How to ask a good question.

How to ask a good question. This thread has advice on the following aspects of writing a good question on this site. Each item in this list links to an answer below about that specific aspect of ...
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### Is CRUDE healthy?

The chatroom CRUDE stands for Close, Reopen, Undelete, Delete, Edit. Is the way this room is currently used healthy for Maths Stack Exchange? There is a core of users which can be counted on one ...
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### Is deleting a question while it is still on hold too quick?

This is a follow-up (not a duplicate) to an old question on Meta: Are we too trigger-happy about deleting (relatively) new posts? I have noticed recently that there are lots of on-hold questions ...
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### Is it appropriate to close every question that doesn't show efforts and/or lacks of context?

Yesterday this question was asked: Finding solutions to $2^x+17=y^2$, then it was closed and finally it was reopened. My concern is about if every question showing no effort or lacking of context ...
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### “Contest problem” policy

What is our policy concerning contest questions on the Mathematics Stack Exchange? Why do we have a policy? What is a contest question? How we deal with on-going contest questions? I see a question ...
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### A feature requested for the purpose of avoiding unintentional newbie-biting

It is not unusual that a newbie posts a question that is obviously about mathematics and it is closed with a notice that says closed as off-topic and then down below that: "This question is ...
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### User who posts ongoing contest problems

Over the past few days, I have come across multiple posts from a particular user that are questions from ongoing contests. On both, I have commented this fact on both the question and the answer, and ...
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### Why a question without showing any work is getting upvoted?

Very often here when a post does not show any work gets down voted to hell, this question is getting upvoted +5 without having shown any work. I have seen others people's post get downvoted severely ...
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### How to explain this string of downvotes?

This is the first time I met such phenomenon. At the same time two old questions Is there a $2 \times 2$ real matrix $A$ such that $A^2=-4I$? https://math.stackexchange.com/questions/2429346/...