Duke Mathematical Journal

Quasi-linear parabolic systems in divergence form with weak monotonicity

Norbert Hungerbühler
Source: Duke Math. J. Volume 107, Number 3 (2001), 497-520.

Abstract

We consider the initial and boundary value problem for the quasi-linear parabolic system

\begin{alignat*}{2} \frac{\partial u}{\partial t}-\di \sigma\big(x,t,u(x,t),Du(x,t)\big) &=f &\text{on }&\Omega\times(0,T),\\ u(x,t)&=0&\text{on }&\partial\Omega\times(0,T),\\ u(x,0)&=u_0(x)\quad&\text{on }&\Omega \end{alignat*}

for a function u : Ω×[0,T)→ℝm with T>0. Here, fLp(0,T;Wp(Ω;ℝm)) for some p∈(2n/2n+2),∞, and u0L2(Ω, ℝm). We prove existence of a weak solution under classical regularity, growth, and coercivity conditions for σ but with only very mild monotonicity assumptions.

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Links and Identifiers

Permanent link to this document: http://projecteuclid.org/euclid.dmj/1091737021
Mathematical Reviews number (MathSciNet): MR1828299
Digital Object Identifier: doi:10.1215/S0012-7094-01-10733-3
Zentralblatt MATH identifier: 1012.35037

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