Elliptic Regularization And Partial Regularity For Motion By Mean Curvature

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Elliptic Regularization and Partial Regularity for Motion by Mean Curvature

Elliptic Regularization and Partial Regularity for Motion by Mean Curvature
Author :
Publisher : American Mathematical Soc.
Total Pages : 106
Release :
ISBN-10 : 9780821825822
ISBN-13 : 0821825828
Rating : 4/5 (828 Downloads)

Book Synopsis Elliptic Regularization and Partial Regularity for Motion by Mean Curvature by : Tom Ilmanen

Download or read book Elliptic Regularization and Partial Regularity for Motion by Mean Curvature written by Tom Ilmanen and published by American Mathematical Soc.. This book was released on 1994 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: We study Brakke's motion of varifolds by mean curvature in the special case that the initial surface is an integral cycle, giving a new existence proof by mean of elliptic regularization. Under a uniqueness hypothesis, we obtain a weakly continuous family of currents solving Brakke's motion. These currents remain within the corresponding level-set motion by mean curvature, as defined by Evans-Spruck and Chen-Giga-Goto. Now let [italic capital]T0 be the reduced boundary of a bounded set of finite perimeter in [italic capital]R[superscript italic]n. If the level-set motion of the support of [italic capital]T0 does not develop positive Lebesgue measure, then there corresponds a unique integral [italic]n-current [italic capital]T, [partial derivative/boundary/degree of a polynomial symbol][italic capital]T = [italic capital]T0, whose time-slices form a unit density Brakke motion. Using Brakke's regularity theorem, spt [italic capital]T is smooth [script capital]H[superscript italic]n-almost everywhere. In consequence, almost every level-set of the level-set flow is smooth [script capital]H[superscript italic]n-almost everywhere in space-time.


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