Convolution is sufficiently important to DSP that it is worth developing the subject in detail. In the following examples, the notation will be somewhat simplified.

Besge presented the result about the convolution sum of divisor functions. Since then Liouville obtained the generalized version of Besge’s formula, which is the binomial convolution sum of divisor ...

, L. Longhi, M. Perlstadt, Differential Operators Commuting with Finite Convolution Integral Operators: Some Non-Abelian Examples, SIAM Journal on Applied Mathematics ...