2000 character limit reached
Some Neumann-Bessel series and the Laplacian on polygons (2012.08944v1)
Published 12 Nov 2020 in math.SP
Abstract: Several sums of Neumann series with Bessel and trigonometric functions are evaluated, as finite sums of trigonometric functions. They arise from a generalization of the Neumann expansion of the eigenstates of the Laplacian in regular polygons.