English

Arrangements of Hyperplanes and Vector Bundles on $P^n$

alg-geom 2008-02-03 v1 Algebraic Geometry

Abstract

Any arrangement of hyperplanes in general position in PnP^n can be regarded as a divisor with normal crossing. We study the bundles of logarithmic 1-forms corresponding to such divisors` from the point of view of classification of vector bundles on PnP^n. It turns out that all such bundles are stable. The study of jumping lines of these bundles gives a unified treatment of several classical constructions associating a curve to a collection of points in PnP^n. The main result of the paper is "Torelli theorem" which says that the collection of hyperplanes can be recovered from the isomorphism class of the corresponding logarithmic bundle unless the hyperplanes ocsulate a rational normal curve. In this latter case our construction reduces to that of secant bundles of Schwarzenberger.

Keywords

Cite

@article{arxiv.alg-geom/9210001,
  title  = {Arrangements of Hyperplanes and Vector Bundles on $P^n$},
  author = {I. Dolgachev and M. Kapranov},
  journal= {arXiv preprint arXiv:alg-geom/9210001},
  year   = {2008}
}

Comments

38 pages, plain TeX