Permutation category explained

In mathematics, the permutation category is a category where

1. the objects are the natural numbers,

S _{n} and

1. there are no morphisms from m to n if

m ≠ n .

It is equivalent as a category to the category of finite sets and bijections between them.

References

• Web site: Todd H. . Trimble . Notes on the Lie operad . University of Chicago . 2022-09-27 . .