数学物理学报(英文版) ›› 2012, Vol. 32 ›› Issue (3): 1053-1062.doi: 10.1016/S0252-9602(12)60078-2

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EXISTENCE AND ASYMPTOTIC BEHAVIOR OF SOLUTIONS FOR NONLINEAR PARABOLIC EQUATIONS WITH VARIABLE EXPONENT OF#br# NONLINEARITY

郭斌|高文杰   

  1. Institute of Mathematics, Jilin University, Changchun 130012, China
  • 收稿日期:2011-01-04 出版日期:2012-05-20 发布日期:2012-05-20
  • 基金资助:

    Supported by NSFC (10771085), Graduate Innovation Fund of Jilin Univer-sity(20111034), and the 985 program of Jilin University.

EXISTENCE AND ASYMPTOTIC BEHAVIOR OF SOLUTIONS FOR NONLINEAR PARABOLIC EQUATIONS WITH VARIABLE EXPONENT OF#br# NONLINEARITY

 GUO Bin, GAO Wen-Jie   

  1. Institute of Mathematics, Jilin University, Changchun 130012, China
  • Received:2011-01-04 Online:2012-05-20 Published:2012-05-20
  • Supported by:

    Supported by NSFC (10771085), Graduate Innovation Fund of Jilin Univer-sity(20111034), and the 985 program of Jilin University.

摘要:

The authors of this article study the existence and uniqueness of weak so-lutions of the initial-boundary value problem for ut = div((|u|σ + d0)|∇u|p(x, t)−2u) +f(x, t) (0 < σ < 2). They apply the method of parabolic regularization and Galerkin's method to prove the existence of solutions to the mentioned problem and then prove the uniqueness of the weak solution by arguing by contradiction. The authors prove that the solution approaches 0 in L2(Ω) norm as t →∞.

关键词: Nonlinear parabolic equation, nonstandard growth condition, localization of solutions

Abstract:

The authors of this article study the existence and uniqueness of weak so-lutions of the initial-boundary value problem for ut = div((|u|σ + d0)|∇u|p(x, t)−2u) +f(x, t) (0 < σ < 2). They apply the method of parabolic regularization and Galerkin's method to prove the existence of solutions to the mentioned problem and then prove the uniqueness of the weak solution by arguing by contradiction. The authors prove that the solution approaches 0 in L2(Ω) norm as t →∞.

Key words: Nonlinear parabolic equation, nonstandard growth condition, localization of solutions

中图分类号: 

  • 35K20