Math and magic are interwoven in a way that makes his fingers itch to pluck edges until they unravel. Rules, laws, and theorems are all still there, still valid, but riddled with #genus exceptions fluctuating from finite to infinite until they’re more hole than surface.
In mathematics, genus (plural genera) has a few different, but closely related, meanings. The fastest, easiest and most intuitive way to introduce the concept of a genus is that it is the number of “holes” of a surface. A sphere has genus 0, and a torus has genus 1. https://en.wikipedia.org/wiki/Genus_(mathematics)