A note on the derivatives of isotropic positive definite functions on the Hilbert sphere

DOI10.3842/SIGMA.2019.081zbMath1429.33003arXiv1905.08655MaRDI QIDQ2280420

Janin Jäger

Publication date: 18 December 2019

Published in: SIGMA. Symmetry, Integrability and Geometry: Methods and Applications (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1905.08655

zbMATH Keywords

isotropicpositive definiteHilbert sphereSchoenberg sequences

Mathematics Subject Classification ID

Orthogonal polynomials and functions of hypergeometric type (Jacobi, Laguerre, Hermite, Askey scheme, etc.) (33C45) Fourier series in special orthogonal functions (Legendre polynomials, Walsh functions, etc.) (42C10) Positive definite functions in one variable harmonic analysis (42A82) Fourier coefficients, Fourier series of functions with special properties, special Fourier series (42A16) Exponential and trigonometric functions (33B10)

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