===== Thin category =====
==== Collection ====
| @#FFBB00: definiendum | @#FFBB00: ${\bf C}$ in it |
| @#AAFFAA: inclusion   | @#AAFFAA: $\bf C$ ... category |
| @#FFFDDD: for all     | @#FFFDDD: $A,B:\mathrm{Ob}_{\bf C}$ |
| @#FFFDDD: for all     | @#FFFDDD: $f,g:{\bf C}[A,B]$ |
| @#55EE55: postulate   | @#55EE55: $f=g$ |

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=== Discussion ===
Miau! {{http://youtu.be/rMWtL_YOyrg}}

=== Reference ===
nLab: [[http://ncatlab.org/nlab/show/thin+category|Thin category]]

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=== Refinement of ===
[[Locally small category]]