Bi-Halfspace and Convex Hull Theorems for Translating Solitons
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Bi-Halfspace and Convex Hull Theorems for Translating Solitons. / Chini, Francesco; Møller, Niels Martin.
I: International Mathematics Research Notices, Bind 2021, Nr. 17, 2021, s. 13011–13045.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Bi-Halfspace and Convex Hull Theorems for Translating Solitons
AU - Chini, Francesco
AU - Møller, Niels Martin
PY - 2021
Y1 - 2021
N2 - While it is well known from examples that no interesting “halfspace theorem” holds for properly immersed n-dimensional self-translating mean curvature flow solitons in Euclidean space Rn+1, we show that they must all obey a general “bi-halfspace theorem” (aka “wedge theorem”): two transverse vertical halfspaces can never contain the same such hypersurface. The same holds for any infinite end. The proofs avoid the typical methods of nonlinear barrier construction for the approach via distance functions and the Omori–Yau maximum principle. As an application we classify the closed convex hulls of all properly immersed (possibly with compact boundary) n-dimensional mean curvature flow self-translating solitons Σn in Rn+1 up to an orthogonal projection in the direction of translation. This list is short, coinciding with the one given by Hoffman–Meeks in 1989 for minimal submanifolds: all of Rn, halfspaces, slabs, hyperplanes, and convex compacts in Rn.
AB - While it is well known from examples that no interesting “halfspace theorem” holds for properly immersed n-dimensional self-translating mean curvature flow solitons in Euclidean space Rn+1, we show that they must all obey a general “bi-halfspace theorem” (aka “wedge theorem”): two transverse vertical halfspaces can never contain the same such hypersurface. The same holds for any infinite end. The proofs avoid the typical methods of nonlinear barrier construction for the approach via distance functions and the Omori–Yau maximum principle. As an application we classify the closed convex hulls of all properly immersed (possibly with compact boundary) n-dimensional mean curvature flow self-translating solitons Σn in Rn+1 up to an orthogonal projection in the direction of translation. This list is short, coinciding with the one given by Hoffman–Meeks in 1989 for minimal submanifolds: all of Rn, halfspaces, slabs, hyperplanes, and convex compacts in Rn.
U2 - 10.1093/imrn/rnz183
DO - 10.1093/imrn/rnz183
M3 - Journal article
VL - 2021
SP - 13011
EP - 13045
JO - International Mathematics Research Notices
JF - International Mathematics Research Notices
SN - 1073-7928
IS - 17
ER -
ID: 237998348