K-P-P-Type asymptotics for nonlinear diffusion in a large ball with infinite boundary data and on rd with infinite initial data outside a large ball

K-P-P-Type asymptotics for nonlinear diffusion in a large ball with infinite boundary data and on rd with infinite initial data outside a large ball
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DOI:
10.1080/03605309508821136
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发表时间:
1995
影响因子:
1.9
通讯作者:
R. Pinsky
R. Pinsky
中科院分区:
数学2区
文献类型:
--
作者:
R. Pinsky

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设 un(x,t) 表示 的最小正解,让 Un(x,t) 表示存在性的最小正解,并且证明了 un 和 Un 的上限和下限。特别是,界限揭示了以下特征的 K-P-P 型渐近函数:令 和 。如果,那么 如果,那么
Let un(x,t) denote the minimal positive solution of and let Un(x,t) denote the minimal positive solution of Existence and upper and lower bounds are proven for un and Un. In particular, the bounds reveal the following characteristic K-P-P-type asymptotics: Let and . If , then If , then