中文

射影丛上线丛的例外序列

代数几何 2025-07-24 v2

摘要

对于向量丛 EP\mathcal E \to \mathbb P^\ell,我们研究其射影化总空间 X=P(E)X = \mathbb P(\mathcal E) 上线丛的例外序列。特别地,我们考虑 P\mathbb P^\ell 的余切丛情形。若 =2\ell = 2,我们完全分类了(强)例外序列,并证明任意极大例外序列都是满的。对于一般 \ell,我们证明 D(X)\mathcal D(X) 的Rouquier维数等于 dimX\dim X,从而证实了Orlov的一个猜想。

关键词

引用

@article{arxiv.2303.10924,
  title  = {Exceptional sequences of line bundles on projective bundles},
  author = {Klaus Altmann and Andreas Hochenegger and Frederik Witt},
  journal= {arXiv preprint arXiv:2303.10924},
  year   = {2025}
}

备注

29 pages, several figures, expanded Section 6: there were some indices wrong in the statement of Theorem 6.1, these are now corrected and a proof added. Same content as published version