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

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

1992-10-06

arxiv.org/abs/alg-geom/9210001v1

Mathematics

Algebraic Geometry

38 pages, plain TeX

Scientific paper

Any arrangement of hyperplanes in general position in $P^n$ 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 $P^n$. 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 $P^n$. 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.

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