Acta mathematica scientia,Series B ›› 2012, Vol. 32 ›› Issue (3): 1053-1062.doi: 10.1016/S0252-9602(12)60078-2

• Articles • Previous Articles     Next Articles

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.

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

CLC Number: 

  • 35K20
Trendmd