Strictly positive definite non-isotropic kernels on two-point homogeneous manifolds: The asymptotic approach

05/15/2022

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by   Jean Carlo Guella, et al.

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We present sufficient condition for a family of positive definite kernels on a compact two-point homogeneous space to be strictly positive definite based on their representation as a series of spherical harmonics. The family analyzed is a generalization of the isotropic kernels and the case of a real sphere is analyzed in details.