ON UNIQUENESS AND EXISTENCE OF ENTROPY SOLUTIONS OF WEAKLY COUPLED SYSTEMS OF NONLINEAR DEGENERATE PARABOLIC EQUATIONS
ON UNIQUENESS AND EXISTENCE OF ENTROPY SOLUTIONS OF WEAKLY COUPLED SYSTEMS OF NONLINEAR DEGENERATE PARABOLIC EQUATIONS
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非线性简并抛物方程弱耦合系统熵解的唯一性和存在性
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发表时间:
2003
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通讯作者:
N. Risebro
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作者:
H. Holden;K. Karlsen;N. Risebro
We prove existence and uniqueness of entropy solutions for the Cauchy problem of weakly coupled systems of nonlinear degenerate parabolic equations. We prove existence of an entropy solution by demonstrating that the Engquist-Osher finite dierence scheme is convergent and that any limit function satisfies the entropy condition. The convergence proof is based on deriving a series of a priori estimates and using a general Lp compactness crite- rion. The uniqueness proof is an adaption of Kruzkov's "doubling of variables" proof. We also present a numerical example motivated by biodegradation in porous media.
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