Groupoid
Collection
definiendum | C in it |
inclusion | C … category |
forall | A,B∈C |
forall | f:C[B,A] |
postulate | f … isomorphism |
Discussion
Reference
Wikipedia: Groupoid
definiendum | C in it |
inclusion | C … category |
forall | A,B∈C |
forall | f:C[B,A] |
postulate | f … isomorphism |
Wikipedia: Groupoid