Definition 29.51.12. Let X be an integral scheme. An alteration of X is a proper dominant morphism f : Y \to X with Y integral such that f^{-1}(U) \to U is finite for some nonempty open U \subset X.
[Definition 2.20, alterations]
[Definition 2.20, alterations]
Definition 29.51.12. Let X be an integral scheme. An alteration of X is a proper dominant morphism f : Y \to X with Y integral such that f^{-1}(U) \to U is finite for some nonempty open U \subset X.
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