tea.mathoverflow.net - Discussion Feed (Can someone undelete a question please)

bsteinberg comments on "Can someone undelete a question please" (21374)

bsteinberg — Thu, 14 Feb 2013 08:20:49 -0800

Thanks for reopening the question everybody.

Todd Trimble comments on "Can someone undelete a question please" (21372)

Todd Trimble — Thu, 14 Feb 2013 04:27:46 -0800

Thanks for clarifying, quid. I had thought that was the original title.

quid comments on "Can someone undelete a question please" (21371)

quid — Thu, 14 Feb 2013 03:30:00 -0800

Not completely convinced regarding the title-theory but one never knows. For the record, it was me who changed the title (already).

The original title (on which gpr) commented was "Matrices over $\mathbb{Z}_n$", which is not a bad title, but then I think the current one (the one essentially suggested by gpr and made by me just taking the first line of the question basically) "Number of idempotent $n \times n$ matrices over $\mathbb{Z}_m" is quite a bit more informative (besides the usage of the letter n now being the same in title and body).

Joel Reyes Noche comments on "Can someone undelete a question please" (21370)

Joel Reyes Noche — Thu, 14 Feb 2013 00:58:38 -0800

For reference: http://mathoverflow.net/questions/121717/number-of-idempotent-n-times-n-matrices-over-mathbbz-m

DavidRoberts comments on "Can someone undelete a question please" (21369)

DavidRoberts — Wed, 13 Feb 2013 18:52:05 -0800

The question is now open, for those wondering.

bsteinberg comments on "Can someone undelete a question please" (21368)

bsteinberg — Wed, 13 Feb 2013 17:43:33 -0800

Thanks Todd.

Todd Trimble comments on "Can someone undelete a question please" (21367)

Todd Trimble — Wed, 13 Feb 2013 17:21:50 -0800

I just cast a vote to undelete. The question was deleted by the poster (Lisa R.), for reasons unknown. Gerhard Paseman recommended that the title be made more specific for some reason (the title was completely fine in my opinion), and perhaps she took that to heart and is planning to ask another question.

bsteinberg comments on "Can someone undelete a question please" (21366)

bsteinberg — Wed, 13 Feb 2013 16:47:54 -0800

Unless I've gone crazy there was a question a bit earlier about the number of idempotent matrices over Z/m. It had 5 or so upvotes and I gave what I believe to be a correct answer. The question now seems to be gone. Given that I put some effort into thinking about and answering the question it would be nice to have it back. Would super users be willing to vote to undelete.