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Cubature formulas, geometrical designs, reproducing kernels, and Markov operators

Published in Infinite groups: geometric, combinatorial and dynamical aspects. Basel: Birkhäuser. 2005, p. 219-267
Collection Progress in Mathematics; 248
Abstract Cubature formulas and geometrical designs are described in terms of reproducing kernels for Hilbert spaces of functions on the one hand, and Markov operators associated to orthogonal group representations on the other hand. In this way, several known results for spheres in Euclidean spaces, involving cubature formulas for polynomial functions and spherical designs, are shown to generalize to large classes of finite measure spaces $(Omega,sigma)$ and appropriate spaces of functions inside $L^2(Omega,sigma)$. The last section points out how spherical designs are related to a class of reflection groups which are (in general dense) subgroups of orthogonal groups.
Keywords Cubature formulasSpherical designsReproducing kernelsMarkov operatorsGroup representationsReflection groups
Stable URL https://archive-ouverte.unige.ch/unige:12154
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Deposited on : 2010-10-19

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