NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Expansions for a fundamental solution of Laplace's equation on R3 in 5-cyclidic harmonics
Published
Author(s)
Howard S. Cohl, Hans Volkmer
Abstract
We derive eigenfunction expansions for a fundamental solution of Laplace's equation in three-dimensional Euclidean space in 5-cyclidic coordinates. There are three such expansions in terms of internal and external 5-cyclidic harmonics of first, second and third kind. The internal and external 5-cyclidic harmonics are expressed by solutions of a Fuchsian differential equation with five regular singular points.
Cohl, H.
and Volkmer, H.
(2014),
Expansions for a fundamental solution of Laplace's equation on R<sup>3</sup> in 5-cyclidic harmonics, Analysis and Application, [online], https://doi.org/10.1142/S0219530514500407
(Accessed October 8, 2025)