The curvature invariant of a Hilbert module over C[z_1,...,z_d]
Operator Algebras
2007-05-23 v1
Abstract
A notion of curvature is introduced in multivariable operator theory and an analogue of the Gauss-Bonnet-Chern theorem is established for graded (contractive) Hilbert modules over the complex polynomial algebra in d variables, d=1,2,3,.... The curvature invariant, Euler characteristic, and degree are computed for some explicit examples based on varieties in (multidimensional) complex projective space, and applications are given to the structure of graded ideals in C[z_1,...,z_d] and to the existence of "inner sequences" for closed submodules of the free Hilbert module H^2(C^d).
Keywords
Cite
@article{arxiv.math/9808100,
title = {The curvature invariant of a Hilbert module over C[z_1,...,z_d]},
author = {William Arveson},
journal= {arXiv preprint arXiv:math/9808100},
year = {2007}
}
Comments
75 pp. AMS-TeX 2.0