Fourier-Mukai partners for very general special cubic fourfolds
Algebraic Geometry
2019-08-06 v3
Abstract
We exhibit explicit examples of very general special cubic fourfolds with discriminant admitting an associated (twisted) K3 surface, which have non-isomorphic Fourier-Mukai partners. In particular, in the untwisted setting, we show that the number of Fourier-Mukai partners for a very general special cubic fourfold with discriminant and having an associated K3 surface, is equal to the number of Fourier-Mukai partners of its associated K3 surface, if ; else, if , the cubic fourfold has Fourier-Mukai partners.
Cite
@article{arxiv.1611.06687,
title = {Fourier-Mukai partners for very general special cubic fourfolds},
author = {Laura Pertusi},
journal= {arXiv preprint arXiv:1611.06687},
year = {2019}
}
Comments
20 pages, Final version to appear in Math. Research Letters