Koszul modules with vanishing resonance in algebraic geometry
Algebraic Geometry
2023-12-11 v2 Commutative Algebra
Abstract
We discuss various applications of a uniform vanishing result for the graded components of the finite length Koszul module associated to a subspace in the second wedge product of a vector space. Previously Koszul modules of finite length have been used to give a proof of Green's Conjecture on syzygies of generic canonical curves. We now give applications to effective stabilization of cohomology of thickenings of algebraic varieties, divisors on moduli spaces of curves, enumerative geometry of curves on K3 surfaces and to skew-symmetric degeneracy loci. We also show that the stability of sufficiently positive rank 2 vector bundles on curves is governed by resonance.
Cite
@article{arxiv.2201.00839,
title = {Koszul modules with vanishing resonance in algebraic geometry},
author = {Marian Aprodu and Gavril Farkas and Claudiu Raicu and Jerzy Weyman},
journal= {arXiv preprint arXiv:2201.00839},
year = {2023}
}
Comments
28 pages. To appear in Selecta Math