Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case

We derive a monotonicity formula at boundary points for a class of nonlinear elliptic partial differential equations, including the obstacle problem case, quenching, a free boundary problem with Bernoulli-type free boundary condition as well as the blow-up case. As application model we prove - for D...

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Main Author: Georg S. Weiss
Format: Article
Language:English
Published: Texas State University 2004-03-01
Series:Electronic Journal of Differential Equations
Subjects:
Online Access:http://ejde.math.txstate.edu/Volumes/2004/44/abstr.html
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author Georg S. Weiss
author_facet Georg S. Weiss
author_sort Georg S. Weiss
collection DOAJ
description We derive a monotonicity formula at boundary points for a class of nonlinear elliptic partial differential equations, including the obstacle problem case, quenching, a free boundary problem with Bernoulli-type free boundary condition as well as the blow-up case. As application model we prove - for Dirichlet boundary data satisfying certain assumptions - the global existence of a classical solution of the free boundary problem with Bernoulli-type free boundary condition in two and three dimensions.
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spelling doaj.art-c22291c5a89c45b8a5f64cb9071ea7672022-12-22T00:10:55ZengTexas State UniversityElectronic Journal of Differential Equations1072-66912004-03-01200444112Boundary monotonicity formulae and applications to free boundary problems I: The elliptic caseGeorg S. WeissWe derive a monotonicity formula at boundary points for a class of nonlinear elliptic partial differential equations, including the obstacle problem case, quenching, a free boundary problem with Bernoulli-type free boundary condition as well as the blow-up case. As application model we prove - for Dirichlet boundary data satisfying certain assumptions - the global existence of a classical solution of the free boundary problem with Bernoulli-type free boundary condition in two and three dimensions.http://ejde.math.txstate.edu/Volumes/2004/44/abstr.htmlFree boundaryboundary regularitynon-tangential touchmonotonicity formulaglobal regularityBernoulli-type free boundary condition.
spellingShingle Georg S. Weiss
Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case
Electronic Journal of Differential Equations
Free boundary
boundary regularity
non-tangential touch
monotonicity formula
global regularity
Bernoulli-type free boundary condition.
title Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case
title_full Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case
title_fullStr Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case
title_full_unstemmed Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case
title_short Boundary monotonicity formulae and applications to free boundary problems I: The elliptic case
title_sort boundary monotonicity formulae and applications to free boundary problems i the elliptic case
topic Free boundary
boundary regularity
non-tangential touch
monotonicity formula
global regularity
Bernoulli-type free boundary condition.
url http://ejde.math.txstate.edu/Volumes/2004/44/abstr.html
work_keys_str_mv AT georgsweiss boundarymonotonicityformulaeandapplicationstofreeboundaryproblemsitheellipticcase