I would say mm and mv name the types of the arguments, like a kind of Hungarian notation, which makes them okay. I think `ab`, `ax`, `axpy` make the problem wor

I would say mm and mv name the types of the arguments, like a kind of Hungarian notation, which makes them okay. I think `ab`, `ax`, `axpy` make the problem worse: in the first two a and b are matrices and in the last a is a scalar. As for `kx`, anything named `k` is usually supposed to be an integer like everywhere else in mathematics (why not `ax` then?). As for scal-scale and nrm-norm, I have no idea why they did that, it seems wrong to me too. Furthermore, it's a specialist expert subdomain—the names are already so standard that everybody who needs them already knows them or looks them up in a second. So I don't see "not guessable" as a valid criticism.