For those who may not have heard of it: https://en.m.wikipedia.org/wiki/Linear_canonical_transformation https://en.m.wikipedia.org/wiki/Linear_canonical_transf

For those who may not have heard of it: https://en.m.wikipedia.org/wiki/Linear_canonical_transformation https://en.m.wikipedia.org/wiki/Linear_canonical_transformat... Neatly generalizes and ties together all of your favorite integral transforms and has weird connections to virtually every branch of mathematics.