Acta mathematica scientia,Series B ›› 2009, Vol. 29 ›› Issue (5): 1165-1172.doi: 10.1016/S0252-9602(09)60094-1

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EXISTENCE OF GLOBAL ATTRACTORS FOR A NONLINEAR EVOLUTION EQUATION IN SOBOLEV SPACE Hk

 ZHANG Yin-Di, LI Kai-Tai   

  1. 1.College of Science, Xi'an Jiaotong |University, Xi'an 710049, China
    2.College of Science, Chang'an University, Xi'an 710064, China
  • Received:2007-12-24 Revised:2008-05-13 Online:2009-09-20 Published:2009-09-20
  • Supported by:

    Sponsored by the  NSFC (10571142, 10771167)

Abstract:

In this paper we prove that the initial-boundary value problem for the nonlinear evolution equation utuu-u3 possesses a global attractor in Sobolev space Hk for all k≥0, which attracts any bounded domain of Hk(Ω) in the Hk-norm. This result is established by using an iteration technique and regularity estimates for linear semigroup of operator, which extends the classical result from the case k∈ [0,1] to the case k∈ [0, ∞).

Key words: semigroup of operator, global attractor, evolution equation, regularity of attractor

CLC Number: 

  • 35B40
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