In this paper, we deal with some fast diffusion equations ut = ?u^m+ au^αv^p and v_t = ?vⁿ+ buq^vβ subject to null Dirichlet boundary conditions. We prove that every solution vanishes in finite time for pq >（m-α）（n-β）, m > α and n > β, where the exact relation of initial data is determined with the aid of some Sobolev Embedding inequalities.If pq <（m-α）（n-β）, m > α and n > β, we show the barriers of the ini... 

【文章來源】：數(shù)學季刊(英文版). 2020,35(02)

【文章頁數(shù)】：15 頁


本文編號：3527384