Global existence and blow-up for semilinear parabolic equation with critical exponent in R N

Global existence and blow-up for semilinear parabolic equation with critical exponent in R N
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R N 中具有临界指数的半线性抛物型方程的全局存在性与爆炸

DOI:
10.14232/ejqtde.2022.1.3
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发表时间:
2022
影响因子:
1.1
通讯作者:
张彬林
张彬林
中科院分区:
数学3区
文献类型:
--
作者:
Fei Fang;张彬林

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本文利用自相似变换和改进的势阱方法研究了一类具有临界Sobolev指数的经典半线性抛物方程解的长时间行为. R. N..在三种情形下证明了解的整体存在性和有限时间爆破。当初始能量较低或临界时,我们不仅给出了解的整体存在性和爆破的阈值结果,而且得到了解的衰减速率。L. 2.全球解决方案的标准。当初始能量较高时,给出了解的整体存在性和爆破的充分条件。我们推广了[R. Ikehata,M. Ishiwata,T. Suzuki,Ann. Inst. H.庞加莱肛门。Non Linéaire 27(2010),No. 3,877-900]。
In this paper, we use the self-similar transformation and the modified potential well method to study the long time behaviors of solutions to the classical semilinear parabolic equation associated with critical Sobolev exponent in . R. N.. Global existence and finite time blowup of solutions are proved when the initial energy is in three cases. When the initial energy is low or critical, we not only give a threshold result for the global existence and blowup of solutions, but also obtain the decay rate of the . L. 2. norm for global solutions. When the initial energy is high, sufficient conditions for the global existence and blowup of solutions are also provided. We extend the recent results which were obtained in [R. Ikehata, M. Ishiwata, T. Suzuki, Ann. Inst. H. Poincaré Anal. Non Linéaire 27(2010), No. 3, 877–900].
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发表时间: 2006-06
影响因子: 1.4
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