English

Linear subspaces of the intersection of two quadrics via Kuznetsov component

Algebraic Geometry 2024-01-02 v1

Abstract

Let Qi(i=1,2)Q_i(i=1,2) be 2g2g dimensional quadrics in P2g+1\mathbb{P}^{2g+1} and let YY be the smooth intersection Q1Q2Q_1\cap Q_2. We associate the linear subspace in YY with vector bundles on the hyperelliptic curve CC of genus gg by the left adjoint functor of Φ:Db(C)Db(Y)\Phi:D^b(C)\rightarrow D^b(Y). As an application, we give a different proof of the classification of line bundles and stable bundles of rank 22 on hyperelliptic curves given by Desale and Ramanan. When g=3g=3, we show that the projection functor induces a closed embedding α:YSUCs(4,h)\alpha:Y\rightarrow SU^s_C(4,h) into the moduli space of stable bundles on CC of rank 44 of fixed determinant.

Keywords

Cite

@article{arxiv.2401.00677,
  title  = {Linear subspaces of the intersection of two quadrics via Kuznetsov component},
  author = {Yanjie Li and Shizhuo Zhang},
  journal= {arXiv preprint arXiv:2401.00677},
  year   = {2024}
}

Comments

15 pages

R2 v1 2026-06-28T14:05:51.088Z