Simple exercise

[Jussi Piitulainen]

Steven D'Aprano writes:

> Unfortunate or not, it seems to be quite common that "zip"
> (convolution) discards items when sequences are of different lengths.

Citation needed. Where is zip called convolution?

Why should zip be called convolution?

> See https://en.wikipedia.org/wiki/Convolution_%28computer_science%29

"This article possibly contains original research. Please improve it by
verifying the claims made and adding inline citations."

Now it looks like the ultimate source is a PlanetMath stub, which in
turn looks like someone is making stuff up.