Examples of algebraic stacks without coarse moduli space?

426 viewsOthersstacks
0

Keel-Mori’s theorem says an algebraic stack with a finite diagonal over a scheme S has a coarse moduli space. What is an example of an algebraic stack without coarse moduli space?

Answered question
0

f0847d029c6d77a827e09a5c8108f9d3a4694eae 18

Check out Jarod Alper’s thesis to learn more.

Answered question