As of today I’m completing my course in math, and I want to share some of the notes I took over these painful years. Unfortunately, they are all in Italian, and most of them are incomplete, and surely there’s tons of errors in them. However, I shed enough blood on them already to correct them, and my cosmic sense of purpose hopes that somebody somewhere will find them useful. I’ts Ⓐ-okay to copy them; sources are available on request.