Let $X$ be a scheme and $R$ be a proper equivalence relation on $X$.
What can be said about the geometric structure of the quotient $X/R$? Is it representable by a stack, for example?
Let $X$ be a scheme and $R$ be a proper equivalence relation on $X$.
What can be said about the geometric structure of the quotient $X/R$? Is it representable by a stack, for example?