These notes provide an introduction to the theory of spherical harmonics in an arbitrary dimension as well as an overview of classical and recent results on som

This monograph records progress in approximation theory and harmonic analysis on balls and spheres, and presents contemporary material that will be useful to an

This book provides a comprehensive presentation of geometric results, primarily from the theory of convex sets, that have been proved by the use of Fourier seri

The current book makes several useful topics from the theory of special functions, in particular the theory of spherical harmonics and Legendre polynomials in a