English

Indecomposable bundles on Cartesian products of odd projective spaces

Algebraic Geometry 2025-04-15 v1

Abstract

In this paper we construct indecomposable vector bundles associated to monads on Cartesian products of odd dimension projective spaces. Specifically we establish the existence of monads on (P1)l1××(P2n+1)lm(\mathbb{P}^1)^{l_1}\times\cdots\times(\mathbb{P}^{2n+1})^{l_m}. We prove stability of the kernel bundle and prove that the cohomology bundle is simple. We also prove the same for monads on (Pn)2×(Pm)2×(Pl)2(\mathbb{P}^n)^2\times(\mathbb{P}^m)^2\times(\mathbb{P}^l)^2 for an ample line bundle L=OX(α,α,β,β,γ,γ)\mathscr{L}=\mathcal{O}_X(\alpha,\alpha,\beta,\beta,\gamma,\gamma).

Keywords

Cite

@article{arxiv.2504.10321,
  title  = {Indecomposable bundles on Cartesian products of odd projective spaces},
  author = {Damian Maingi},
  journal= {arXiv preprint arXiv:2504.10321},
  year   = {2025}
}

Comments

21 pages. Comments are welcome. Generalization of arXiv:2307.10077 and arXiv:2204.03844 hence some overlap