Sharp one-sided curvature estimates for fully nonlinear curvature flows and applications to ancient solutions

Title: Sharp one-sided curvature estimates for fully nonlinear curvature flows and applications to ancient solutions
Creator: Langford, Mat; Lynch, Stephen
Relation: Journal für die reine und angewandte Mathematik (Crelles Journal) Vol. 2020, Issue 765, p. 1-33
Publisher Link: http://dx.doi.org/10.1515/crelle-2019-0010
Publisher: Walter de Gruyter GmbH
Resource Type: journal article
Date: 2020
Description: We prove several sharp one-sided pinching estimates for immersed and embedded hypersurfaces evolving by various fully nonlinear, one-homogeneous curvature flows by the method of Stampacchia iteration. These include sharp estimates for the largest principal curvature and the inscribed curvature (“cylindrical estimates”) for flows by concave speeds and a sharp estimate for the exscribed curvature for flows by convex speeds. Making use of a recent idea of Huisken and Sinestrari, we then obtain corresponding estimates for ancient solutions. In particular, this leads to various characterisations of the shrinking sphere amongst ancient solutions of these flows.
Subject: curvature estimates; ancient solutions; Stampacchia iteration; sharp one-sided
Identifier: http://hdl.handle.net/1959.13/1441813
Identifier: uon:41540
Identifier: ISSN:0075-4102
Language: eng
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