Difference between revisions of "SET (category)"
From Maths
(No difference)
|
Revision as of 09:40, 19 February 2016
Definition
The category [ilmath]\mathrm{SETS} [/ilmath] is the category that contains every set for its objects and every function (in the conventional sense, as mappings from 1 set to another) between those sets as the arrows of the category[1].
Subcategories
(Loads)
- [ilmath]\mathrm{GROUP} [/ilmath] - the category of all groups and group homomorphisms
- [ilmath]\mathrm{AGROUP} [/ilmath] - a subcategory of [ilmath]\mathrm{GROUP} [/ilmath] consisting of all Abelian groups and their homomorphisms which are just the group homomorphisms between Abelian groups)
- [ilmath]\mathrm{TOP} [/ilmath] - the category of all topological spaces, the arrows are continuous maps
Many more, rings, commutative rings, so forth.
TODO: (More) exhaustive list
