n. From the words Mathematician and Magician: A person who's so good at maths that the answers they come up with and techniques they use seem like magic to those of a more ignorant nature.
John Nash (from "A Beautiful Mind") could be described as a mathemagician
A mathematician is a device for turning coffee into theorems.
Asked for a testimony to the effect that Emmy Noether was a great woman mathematician, he said: I can testify that she is a great mathematician, but that she is a woman, I
cannot swear.
Possibly, on average, the smartest people around since they can actually back up their knowledge with rigorous proof. Someone who specializes in pure or applied mathematics.