A new approach for the existence problem of minimal cubature formulas based on the Larman-Rogers-Seidel theorem

Details A new approach for the existence problem of minimal cubature formulas based on the Larman-Rogers-Seidel theorem A new approach for the existence problem of minimal cubature formulas based on the Larman-Rogers-Seidel theorem

2011-03-06

arxiv.org/abs/1103.1111v1

Mathematics

Numerical Analysis

12 pages, no figure

Scientific paper

In this paper we consider the existence problem of cubature formulas of degree 4k+1 for spherically symmetric integrals for which the equality holds in the M\"oller lower bound. We prove that for sufficiently large dimensional minimal formulas, any two distinct points on some concentric sphere have inner products all of which are rational numbers. By applying this result we prove that for any d > 2 there exist no d-dimensional minimal formulas of degrees 13 and 21 for some special integral.

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