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