Discrete category

Collection

definiendum ${\bf C}$ in $\mathrm{it}$
exists $F$ … equivalence of categories $({\bf C}, {\bf D})$
for all $f:\mathrm{Mor}_{\bf D}$
exists $A\in{\bf D}$
postulate $f=1_A$

Discussion

Idea

A discrete category either has no non-identity arrows or at least is equivalent to such a category.

Terminology

The discrete categories with $n$ objects are denoted ${\bf n}$.

Reference

Parents

Requirements

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