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Tagged with frobenius-splitting ac.commutative-algebra
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Blow-ups of $ F $-regular varieties at points in general position and finite generation of the Cox ring
A variety $ X $ is $ F $-split if there exists an $ \mathcal{O}_{X} $-linear map $ \phi: F_{\ast}(\mathcal{O}_{X}) \to \mathcal{O}_{X} $ such that $ \phi \circ F^{\sharp} = \operatorname{id}_{\mathcal{...