Published Paper
Inserted: 18 may 2010
Last Updated: 12 jun 2018
Journal: Commun. Anal. Geom.
Volume: 19
Number: 5
Pages: 905-922
Year: 2011
Abstract:
We define several notions of singular set for Type I Ricci flows and show that they all coincide. In order to do this, we prove that blow-ups around singular points converge to nontrivial gradient shrinking solitons, thus extending work of Naber. As a by-product we conclude that the volume of a finite-volume singular set vanishes at the singular time. We also define a notion of density for Type I Ricci flows and use it to prove a regularity theorem reminiscent of White's partial regularity result for mean curvature flow.
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