On the level of a Calabi-Yau hypersurface. (arXiv:1801.04893v2 [math.AG] UPDATED)

Boix-De Stefani-Vanzo defined the notion of level for a smooth projective hypersurface over a finite field in terms of the stabilisation of a chain of ideals previously considered by \`Alvarez-Montaner-Blickle-Lyubeznik, and showed that in the case of an elliptic curve the level is 1 if and only if it is ordinary and 2 otherwise. Here we extend their theorem to the case of Calabi-Yau hypersurfaces by relating their level to the $F$-jumping exponents of Blickle-Musta\c{t}\u{a}-Smith and the Hartshorne-Speiser-Lyubeznik numbers of Musta\c{t}\u{a}-Zhang. 查看全文>>