Ito–Lozovanu conjecture on syzygies of polarized abelian varieties

Let (A,L)(A,L) be a polarized abelian variety of dimension gg, and let pp be a positive integer. Define the Q\mathbb Q-ample divisor

D=1p+2L.D=\frac{1}{p+2}L.

Assume that for every abelian subvariety BB of AA,

(DdimBB)>(dimB)dimB.(D^{\dim B}\cdot B)>(\dim B)^{\dim B}.

Ito–Lozovanu conjecture. Under these assumptions, LL satisfies property (Np)(N_p), meaning that the first pp steps of the minimal graded free resolution of its section algebra are linear. This conjecture gives numerical conditions on abelian subvarieties that are expected to imply higher syzygy properties; the source attributes it to Ito and Lozovanu and treats it as open.

Sources & referencesView supporting material

Primary source

Zhi Jiang, “Cohomological rank functions and Syzygies of abelian varieties”, arXiv:2010.10053 (2020).

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