Lazarsfeld's conjecture on Seshadri constants of ample line bundles

Let XX be a projective manifold and let LL be an ample line bundle on XX. For a very general point xXx\in X, write

ε(X,L;1)=ε(X,L;x),\varepsilon(X,L;1)=\varepsilon(X,L;x),

the maximal value of the Seshadri constant of LL on XX. Lazarsfeld's conjecture. One has

ε(X,L;1)1.\varepsilon(X,L;1)\geq 1.

This conjecture predicts a uniform lower bound for the local positivity of ample line bundles in every dimension. The paper presents it as a general conjecture; no resolution is given here.

Sources & referencesView supporting material

Primary source

Jie Liu, “Seshadri constants of the anticanonical divisors of Fano manifolds with large index”, arXiv:1806.05087 (2019).

Additional references

2 papers in this index state this conjecture (2007–2018). The statement above is taken from the most recent of them; the others are arXiv:0707.4140.

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