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41 votes
4 answers

Catering to professional appearance a bit much?

[In case of hurry, please scroll down to the suggestions at the very end.] The deletion of the Math Jokes thread (mirrors: html or pdf), most likely provoked by the meta.MO debate about some specific ...
darij grinberg's user avatar
24 votes
1 answer

Why was my dissenting viewpoint in a post about diversity censored?

In a question about special lectures for the ICM, the following answer proposed that a lecture on how to make the mathematical field more diverse be given. The answer contains some rather bold ...
Patriot's user avatar
  • 1,048
18 votes
0 answers

Removing questions after answers

I recently gave a simple counter example to a question posed (I'm sure the mods can see the question). Probably the user was embarrassed by this. The question was promptly deleted and with that my ...
Thomas Rot's user avatar
  • 7,453
18 votes
4 answers

Deletion of on-topic comment threads

This question is about suppression of threads of comments by moderators, moved to chat with the message "Comments are not for extended discussion; this conversation has been moved to chat", ...
YCor's user avatar
  • 62.4k
17 votes
2 answers

Decluttering MathOverflow

There are quite a few very poor questions (all being put on hold quite soon after they've been asked), such as this. These questions stick around unless they get deleted by the OP (which they almost ...
Dominic van der Zypen's user avatar
15 votes
1 answer

a spate of deletions by "Community"

18 minutes ago (at time of writing) a whole swathe of questions appear to have been deleted, some of which seemed not to be obviously sub-par or off-topic, and some of which had a net rep scoire of 0 (...
Yemon Choi's user avatar
  • 25.6k
14 votes
3 answers

Should we try to re-start manual deletions or is the situation fine anyway?

On MO 1.0 we had, after some discussions and conflicts but still, what I think was a quite smoothly and efficiently working process of deleting "bad" content. It seems with the move to MO 2.0 this ...
user avatar
14 votes
1 answer

Why was my question deleted?

Why was my question Is the Frog game solvable in the root of a full binary tree? deleted? It was a cross-post, but I followed all recommended advices when doing so. It was also decently upvoted (12+). ...
Vepir's user avatar
  • 611
13 votes
2 answers

Why did flagging a comment for deletion made it disappear immediately?

I wrote a comment under an answer, claiming that the answer was wrong. The poster replied to me in another comment, showing that my argument was wrong. Acknowledging this, I deleted my comment and ...
Alex M.'s user avatar
  • 5,367
12 votes
1 answer

Should I delete my own question if it turns out trivial after a comment?

I had not given this question enough thought before asking it. I went straight to looking for a reference without thinking about it. Somebody pointed out the obvious solution in a comment. Should I ...
Thomas Kahle's user avatar
  • 1,961
10 votes
1 answer

Delete wrong answers or leave them for instructional purposes

It is tempting to just delete a wrong answer on However, some errors are subtle, and it might be instructive to label some wrong answers as such, but leave them on MO to highlight ...
Dominic van der Zypen's user avatar
9 votes
1 answer

A question regarding some downvoting on my first question and answer on MathOverflow and my desired remedy

My first question "A question regarding the Continuum Hypothesis" (which I answered), was recently downvoted after several years of staying at the same score. Since I (with 20/20 hindsight) believe ...
Thomas Benjamin's user avatar
5 votes
1 answer

Cancel delete vote

For closing votes, before a question is closed (5 votes) I can cancel my closing vote (after which I can't vote anymore). After a deletion vote (of a closed question with score $\le -3$), I tried to ...
YCor's user avatar
  • 62.4k
4 votes
1 answer

Rules for deleting one's own question

Today (2019 July 6) a new user had posted a question that received some upvotes The problem is from contest.Please flag it for removing it and I had provided an answer that didn't solve the problem. ...
Manfred Weis's user avatar
  • 12.8k
2 votes
1 answer

Is it possible to find out why a comment was deleted?

I had a comment at How do you generate math figures for academic papers? asking whether the question was a duplicate. (Carlo Beenakker is responding to it in this comment.) Since the comment is no ...
LSpice's user avatar
  • 12k
0 votes
0 answers

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 ...
Iman Mosleh's user avatar
-8 votes
1 answer

Account not deleted [closed]

25 hours after my account was scheduled for deletion, the account is still active. I tried deleting my answers manually but it is not possible in most cases, same for questions. What should I do?
user avatar
-11 votes
1 answer

Why was my answer deleted? Cause?

The axiom of choice as a consequence of a stronger semantics? First we show that $\in$ is not a semantic symbol. Suppose that $\in$ is a semantic symbol. Contradiction: We know that $x\in \...
user avatar