On a Method of K. Uhlenbeck for Proving Partial Regularity for Solutions of Certain Nonlinear Elliptic Systems.
Ester Giarusso (1986)
Manuscripta mathematica
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Ester Giarusso (1986)
Manuscripta mathematica
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Edward N. Dancer, Shusen Yan (2007)
Bollettino dell'Unione Matematica Italiana
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We show how a change of variable and peak solution methods can be used to prove that a number of nonlinear elliptic partial differential equations have many solutions.
N. Kutev (1987)
Banach Center Publications
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Nicolai V. Krylov (1997)
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze
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Friedmar Schulz (1993)
Journal für die reine und angewandte Mathematik
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Gary M. Liebermann (1986)
Mathematische Zeitschrift
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Arkhipova, A.A. (2004)
Journal of Mathematical Sciences (New York)
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Jens Frehse (1971)
Mathematische Zeitschrift
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Gary M. Lieberman (1986)
Journal für die reine und angewandte Mathematik
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Lucio Boccardo (2003)
RACSAM
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Inequalities concerning the integral of |∇u| on the subsets where |u(x)| is greater than k can be used in order to prove regularity properties of the function u. This method was introduced by Ennio De Giorgi e Guido Stampacchia for the study of the regularity of the solutions of Dirichlet problems.
Michal Křížek, Liping Liu (1996)
Applicationes Mathematicae
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A nonlinear elliptic partial differential equation with the Newton boundary conditions is examined. We prove that for greater data we get a greater weak solution. This is the so-called comparison principle. It is applied to a steady-state heat conduction problem in anisotropic magnetic cores of large transformers.
Christoph Hamburger (1998)
Manuscripta mathematica
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Uraltseva, N. N.
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Giovanni Cimatti (2009)
Bollettino dell'Unione Matematica Italiana
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The voltage-current characteristics of two classes of nonlinear resistors (varistors and thermistors) modelled as three-dimensional bodies is derived from the corresponding systems of nonlinear elliptic boundary value problems. Theorems of existence and uniqueness of solutions are presented, together with certain properties of monotonicity of the conductance.