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arXiv · 2412.19047

Inverses of integral transforms of RKHSs

Akira Yamada
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Abstract

The Fourier transform and its inverse are well-known to have complex conjugate integral kernels. S.~Saitoh demonstrated that this relationship extends to the theory of integral transforms of Hilbert spaces of functions under certain conditions. In this paper, we derive a necessary and sufficient condition for the inverse of an integral transform of a Hilbert space of functions to be represented by a complex conjugate integral kernel. As an application, we present an alternative proof of Plancherel's theorem using the theory of reproducing kernels.

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Akira Yamada. 2024-12-26. Inverses of integral transforms of RKHSs. https://arxiv.org/abs/2412.19047

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