These are detailed notes on Perelman's papers ``The entropy formula
for the Ricci flow and its geometric applications'' [arxiv:math.DG/0211159]
and ``Ricci flow with surgery on three-manifolds'' [arxiv:math.DG/0303109].
Received: 22 February 2007
Revised: 19 September 2008
Accepted: 11 October 2008
Published: 6 November 2008
Corrected: 23 August 2011
Proposed: Rob Kirby, Gang Tian
Seconded: Dave Gabai, Tom Mrowka