The isomorphism of categories of Example 9.2.3.1.1 restricts to an isomorphism
In other words, we have an identification
\[ \webleft\{ \text{Groups}\webright\} \cong \webleft\{ \text{One-object groupoids}\webright\} . \]
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.
The isomorphism of categories of Example 9.2.3.1.1 restricts to an isomorphism
In other words, we have an identification
