He addresses prerequisites specifically in the first lecture at this timestamp: https://youtu.be/9syvZr-9xwk?t=266 https://youtu.be/9syvZr-9xwk?t=266 (You're

He addresses prerequisites specifically in the first lecture at this timestamp: https://youtu.be/9syvZr-9xwk?t=266 https://youtu.be/9syvZr-9xwk?t=266 (You're expected to be comfortable understanding mathematical theorems and producing proofs.)