Initial traces and solvability for a semilinear heat equation on a half space of ℝ^{ℕ}

Author:

Hisa Kotaro,Ishige Kazuhiro,Takahashi Jin

Abstract

We show the existence and the uniqueness of initial traces of nonnegative solutions to a semilinear heat equation on a half space of R N \mathbb {R}^N under the zero Dirichlet boundary condition. Furthermore, we obtain necessary conditions and sufficient conditions on the initial data for the solvability of the corresponding Cauchy–Dirichlet problem. Our necessary conditions and sufficient conditions are sharp and enable us to find optimal singularities of initial data for the solvability of the Cauchy–Dirichlet problem.

Funder

Japan Society for the Promotion of Science

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

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