Reproducing kernel for elastic Herglotz functions
Revista Matemática Complutense(2019)
摘要
We study the elastic Herglotz wave functions, which are entire solutions of the spectral Navier equation appearing in linearized elasticity theory with L^2 -far-field patterns. We characterize in three-dimensions the set of these functions 𝒲, as a closed subspace of a Hilbert space ℋ of vector-valued functions such that they and their spherical gradients belong to a certain weighted L^2 space. This allows us to prove that 𝒲 is a reproducing kernel Hilbert space and to calculate the reproducing kernel. Finally, we outline the proof for the two-dimensional case and give the corresponding reproducing kernel.
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关键词
Reproducing kernel,Elastic Herglotz wave functions,Navier equation,Helmholtz equation
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