Stability analysis of asymptotic profiles for sign-changing solutions to fast diffusion equations
Stability analysis of asymptotic profiles for sign-changing solutions to fast diffusion equations
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快速扩散方程变号解的渐近轮廓稳定性分析
DOI:
10.1007/s00229-012-0583-9
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
Goro Akagi and Ryuji Kajikiya
中科院分区:
文献类型:
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作者:
Hironobu Kimura;Damiran Tseveenamijil;中屋敷 厚;Ryuji Kajikiya;筧 知之;Hironobu Kimura;Ryuji Kajikiya;Yoshishige Haraoka;Tomoyuki Kakehi;Goro Akagi and Ryuji Kajikiya
Every solutionu=u(x,t) of the Cauchy–Dirichlet problem for the fast diffusion equation,∂t(|u|m-2u) =ΔuinΩ× (0, ∞) with a smooth bounded domainΩofand 2 <m< 2* : = 2N/(N− 2)+, vanishes in finite time at a power rate. This paper is concerned with asymptotic profiles of sign-changing solutions and a stability analysis of the profiles. Our method of proof relies on a detailed analysis of a dynamical system on some surface in the usual energy space as well as energy method and variational method.