Ein–Lazarsfeld conjecture on Seshadri constants

Let YY be any projective manifold, and let LL be any ample line bundle on YY. The Seshadri constant of LL at a point yYy\in Y, denoted ϵ(L,y)\epsilon(L,y), measures the local positivity of LL at yy. Ein–Lazarsfeld conjecture. At a very general point yYy\in Y,

ϵ(L,y)1.\epsilon(L,y)\geq 1.

The conjecture generalizes the result that for an ample line bundle on a projective surface, the inequality holds at a very general point. Its status is not resolved in the supplied text.

Sources & referencesView supporting material

Primary source

Ya Deng, “Applications of the Ohsawa-Takegoshi Extension Theorem to Direct Image Problems”, arXiv:1703.07279 (2017).

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