Sumihiro'S Theorem

(Theorems In Algebraic Geometry)


Theorems In Algebraic Geometry
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What is Sumihiro's theorem?

In algebraic geometry, Sumihiro's theorem, introduced by , states that a normal algebraic variety with an action of a torus can be covered by torus-invariant affine open subsets. The "normality" in the hypothesis cannot be relaxed. The hypothesis that the group acting on the variety is a torus can also not be relaxed.

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theorems in algebraic geometry

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