%0 Journal Article
%T Cotangent cohomology of rational surface singularities
%A Klaus Altmann
%A Jan Stevens
%J Mathematics
%D 1998
%I arXiv
%R 10.1007/s002220050345
%X 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.
%U http://arxiv.org/abs/math/9809132v1