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In mathematics a stack or 2-sheaf is a sheaf that takes values in categories rather than sets.

1 vote

What can we do with a coarse moduli space that we can't do with a DM moduli stack?

May I suggest rephrasing the question to something like: Are there any results in the theory of stacks that rely on the existence of an underlying coarse moduli space? …
Brian Jurgelewicz's user avatar