English

Some new Fano varieties with a multiplicative Chow-K\"unneth decomposition

Algebraic Geometry 2021-11-16 v1

Abstract

Let YY be a smooth dimensionally transverse intersection of the Grassmannian Gr(2,n)\hbox{Gr}(2,n) with 3 Pl\"ucker hyperplanes. We show that YY admits a multiplicative Chow-K\"unneth decomposition, in the sense of Shen-Vial. As a consequence, a certain tautological subring of the Chow ring of powers of YY injects into cohomology.

Keywords

Cite

@article{arxiv.2111.07069,
  title  = {Some new Fano varieties with a multiplicative Chow-K\"unneth decomposition},
  author = {Robert Laterveer},
  journal= {arXiv preprint arXiv:2111.07069},
  year   = {2021}
}

Comments

16 pages, to appear in Osaka J. Math., comments welcome. arXiv admin note: substantial text overlap with arXiv:2009.11061; text overlap with arXiv:2107.10051, arXiv:2105.02016, arXiv:2105.02224, arXiv:2110.11791, arXiv:2108.08547