The convolution of two complex-valued functions on a group is defined as
where the support (set which is not zero) of each function is finite.
The convolution of two complex-valued functions on a group is defined as
where the support (set which is not zero) of each function is finite.
Weisstein, Eric W. "Group Convolution." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/GroupConvolution.html