Cotangent cohomology of rational surface singularities
Algebraic Geometry
2009-10-31 v1
Abstract
We show that the number of generators of the n-th cotangent cohomology group (n >=2) is the same for all rational surface singularities Y. For a large class of rational surface singularities, including quotient singularities, this number is also the dimension. For them we obtain an explicit formula for the corresponding Poincare series.
Keywords
Cite
@article{arxiv.math/9809132,
title = {Cotangent cohomology of rational surface singularities},
author = {Klaus Altmann and Jan Stevens},
journal= {arXiv preprint arXiv:math/9809132},
year = {2009}
}
Comments
14 pages, LaTeX 2e