The Artin invariant of a smooth K3 hypersurface is characterized in terms of quasi-F-splitting, yielding an explicit formula.
Relèvements modulo p2 et décomposition du complexe de de Rham
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Degeneration of the Hodge-to-de Rham and Hochschild-to-cyclic spectral sequences at E2 is equivalent to all singularities being quasihomogeneous plane curve singularities for integral projective LCI curves.
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An explicit formula for the Artin invariant of smooth K3 hypersurfaces
The Artin invariant of a smooth K3 hypersurface is characterized in terms of quasi-F-splitting, yielding an explicit formula.
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Hodge-to-de Rham degeneration and quasihomogeneous singularities of curves
Degeneration of the Hodge-to-de Rham and Hochschild-to-cyclic spectral sequences at E2 is equivalent to all singularities being quasihomogeneous plane curve singularities for integral projective LCI curves.