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83 votes
3 answers

MathOverflow user jailed

I know this is off-topic, not even being a question. MathOverflow user Kıvanç Ersoy has been jailed, apparently for signing a petition. Edit: As mentioned in comments, there is a petition about ...
Jeremy Rickard's user avatar
56 votes
5 answers

What happened to the dear user "quid" (9072), they appear deleted?

What happened to the dear user "quid" (9072), they appear deleted? Noticed this by edits I remember were from them. Google still remembers them and the user page of user number 9072 returns 404 (...
joro's user avatar
  • 24.3k
44 votes
2 answers

How to cite comment by unknown user disproving Erdős conjecture?

I believe that fedja has disproved a conjecture of Erdős et al. when commenting on my question Almost monochromatic point sets, but I'm unable to contact fedja regarding this. What shall I do? Shall I ...
domotorp's user avatar
  • 18.3k
29 votes
3 answers

Celebrity usernames

The question "naive de Rham cohomology fails for singular varieties" (naive de Rham cohomology fails for singular varieties) recently received an apparently useful answer from a user with the name "...
Sam Hopkins's user avatar
  • 23.1k
22 votes
4 answers

Are professional Physicists, Computer Scientists, Engineers, Economists... not allowed to ask questions at MO?

"MathOverflow is a question and answer site for professional mathematicians." May other professional researchers ask questions at MO? Should they check their credentials at the door? If not, and ...
André Levy's user avatar
22 votes
2 answers

Ignoring certain users' postings

This old post on meta stackexchange contains a script that hides posts from users of your choice. There were some negative comments there and the script doesn't seem to be working anymore (maybe ...
Felipe Voloch's user avatar
18 votes
1 answer

Influx of ridiculous number of spam users – what to do?

There is currently an absolutely ridiculous influx of spam user profiles: almost the entire "recent badges" section in the right-hand column of the main page is full of Autobiographer badges ...
gmvh's user avatar
  • 2,798
13 votes
3 answers

Flagging spam user

I just noticed an "Autobiographer" badge awarded to this unusually named user: . I immediately moved to flag this obviously spam account, only to realise that ...
LSpice's user avatar
  • 11.6k
13 votes
0 answers

Users with many questions having negatives votes

I am a bit hesitant to bring up this issue, but since it does bother me a good deal here goes. It has similarities with this other meta question but with a more objective edge maybe. It is a fact ...
Archie's user avatar
  • 883
13 votes
2 answers

Users using AI to write lots of answers

Recently, there are a lot of new pseudonymous users with a peculiar pattern of posts: only answers, no questions, in lots of widely differing areas of mathematics (where it is unlikely that one random ...
gmvh's user avatar
  • 2,798
11 votes
2 answers

the number of on line users at a given moment

Is there a way to realize that, at a given moment, how many users are (MO) on line? Thank you
Ali Taghavi's user avatar
10 votes
1 answer

How to report intrisically spammy user accounts?

Sometimes, I notice that some very odd username is listed on Home as having earned the "Autobiographer" badge, where by "odd" I mean something very much non-mathematical and ...
gmvh's user avatar
  • 2,798
9 votes
2 answers

Why are usernames not unique?

Fifty users on MO are identified simply by the name Andrew (with a capital A). Perhaps there are even more common names. Most websites require prospective users to register a name distinct from that ...
John Bentin's user avatar
  • 2,437
8 votes
3 answers

Community standard for contacting users off of MO?

If a user is using their full name as their user name, what, if any, is the community standard with regards to emailing that user using their independently found work email address about their ...
Trevor J Richards's user avatar
8 votes
1 answer

Links to the reputation leagues are broken on MathOverflow

At the bottom of the users page you can find links to weekly / monthly / quarterly reputation leagues. Currently there is the following link: - it ...
Martin Sleziak's user avatar
6 votes
0 answers

Only one addtional @user

Why do we have this restriction? There are many circumstances where it is natural to cite several users (especially when several=two) in one comment.
Joseph O'Rourke's user avatar
5 votes
2 answers

In the MathOverflow data, can you determine the number of hours you've spent on MathOverflow?

In your profile, you can find a list of all your questions, answers, and comments, and also how many total days you've been logged into MathOverflow. Is there also a way to determine the total number ...
David White - gone from MO's user avatar
5 votes
1 answer

Getting list of users ordered by date joined

Back in the old days before we moved to the current stackexchange platform, you could list users sorted by their user number. Is it still possible to get such a list? I'm trying to remember an old-...
Andy Putman's user avatar
3 votes
1 answer

Who wrote the year of death in the profile page of the late William Thurston?

Prof. William Thurston passed away on Aug. 21, 2012. His MO profile page gives Feb. 22, 2012 as the date of his last log-in. Who is the person who wrote the year of his death in his profile page? Was ...
Alex M.'s user avatar
  • 5,345
3 votes
1 answer

On Notification Mechanisms in MathOverflow

Inbox is where a typical user receives most notifications in Mathoverflow. One also receives moderators' private messages through mail. My question is: What other notification mechanisms are ...
user avatar
2 votes
2 answers

Is it possible to list all mathoverflow users from a given country?

Is it possible to produce the list all mathoverflow users from a given country?
Lviv Scottish Book's user avatar
2 votes
1 answer

Why is a user with many upvoted posts shown with reputation 1?

Sometimes I stumble upon a user who is shown with reputation 1 - despite the fact that the user has many upvoted posts and many badges, which means they should have higher reputation. Why does this ...