Subsection 1.2.3 (000E): $0$-Categories

Preferences





Font:

PDF Style:

Here's a breakdown of the differences between each PDF style:

Style	Class	Font	Theorem Environments
Style 1	`book`	Alegreya Sans	`tcbthm`
Style 2	`book`	Alegreya Sans	`amsthm`
Style 3	`book`	Arno*	`amsthm`
Style 4	`book`	Computer Modern	`amsthm`

*To be replaced with Linus Romer's Elemaints when it is released.

A $0$-category is a poset.¹

¹Motivation: A $0$-category is precisely a category enriched in the poset of $\webleft (-1\webright )$-categories.

A $0$-groupoid is a $0$-category in which every morphism is invertible.¹

¹That is, a set.

Noticed something off, or have any comments? Feel free to reach out!

You can also use the contact form below: