# Who edited Perelman's papers? [closed]

While procrastinating over mathematical papers on Arxiv, I came across odd dates of the papers.

That is,

Ricci flow with surgery on three-manifolds, Grisha Perelman, February 1, 2008

The entropy formula for the Ricci flow and its geometric applications, Grisha Perelman, February 1, 2008

Who made the edit to the dates? Or, is there a different administrative task being done by moderators from time to time?

Thanks. I will delete this post if it is seriously off-topic.

-

## closed as too localized by Chandru, Américo Tavares, t.b., Ryan Budney, RasmusJun 11 '11 at 9:26

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

I'm not sure if this is on-topic, but I am unable to confirm what you're seeing: entropy-formula, surgery. Could you please provide a link? – t.b. Jun 10 '11 at 18:03
For clarification @Theo: the OP is talking about the dates written in the papers. The arxiv version have not been edited and are [v1] Mon, 10 Mar 2003 16:44:35 GMT and [v1] Mon, 11 Nov 2002 16:11:49 GMT, respectively. – Rasmus Jun 10 '11 at 18:04
@Rasmus, yes that was what I meant. One of the papers stated Jan 1, 2011. But now, upon rechecking, I found it to be 2008. Something is happening or has happened. – Chulumba Jun 10 '11 at 18:07
In the source code the date is not specified at all (no \today or anything). I don't know what \maketitle does in this case. That the compilation dates were 10 Mar 2003 and 11 Nov 2002 is confirmed by the vertical arxiv signature on the first sides of the papers. – Rasmus Jun 10 '11 at 18:09
The paper hasn't been edited. It appears you're reading the date the .tex file was last compiled. – Ryan Budney Jun 10 '11 at 18:16

Is not specifying a date the same as specifying date=\today? Or: why did tex put a date even though it was not specified? – Rasmus Jun 10 '11 at 18:15