Some Neumann-Bessel series and the Laplacian on polygons
arXiv:2012.08944 · doi:10.1063/5.0037872
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.
7 pages, 8 figures