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Syzygy algebras for the Segre embeddings

Algebraic Geometry 2019-09-04 v2 Commutative Algebra

Abstract

We describe the syzygy spaces for the Segre embedding P(U)×P(V)P(UV)\mathbb{P}(U)\times\mathbb{P}(V)\subset\mathbb{P}(U\otimes V) in terms of representations of GL(U)×GL(V){\rm GL}(U)\times {\rm GL}(V) and construct the minimal resolutions of the sheaves OP(U)×P(V)(a,b)\mathscr{O}_{\mathbb{P}(U)\times\mathbb{P}(V)}(a,b) in D(P(UV))D(\mathbb{P}(U\otimes V)) for adim(U)a\geqslant-\dim(U) and bdim(V)b\geqslant-\dim(V). Also we prove some property of multiplication on syzygy spaces of the Segre embedding.

Keywords

Cite

@article{arxiv.1108.3733,
  title  = {Syzygy algebras for the Segre embeddings},
  author = {Igor V. Netay},
  journal= {arXiv preprint arXiv:1108.3733},
  year   = {2019}
}

Comments

17 pages, 11 pictures