Yoshifumi Tsuchimoto
It is interesting to regard things in the language of category theory. We give here a brief, incomplete, incorrect list. The entry in are here just for fun.
math | -modules | affine schemes | ||
modules | (Sets) | (modules) | (sheaves) | |
algebras | (monoid) | ((unital) ring) | (affine scheme) | |
direct product | disjoint union | |||
tensor product | fiber product | |||
morphisms | (map) | (ring hom) | (morphism) | |
quotient map | closed immersion | |||
localization by an element | open immersion | |||
(Hopf algebra) | (affine group scheme) | |||
(co-multiplication) | (multiplication) | |||
(co-unit) | (unit) | |||
(co-inverse) | (inverse) |