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Higher cotangent cohomology of rational surface singularities

Published online by Cambridge University Press:  04 December 2007

Jan Stevens
Jan Stevens
Affiliation:
Matematik, Göteborgs universitet, Chalmers tekniska högskola, SE–412 96 Göteborg, [email protected]
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Abstract

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We give dimension formulas for the cotangent cohomology groups Ti for all rational surface singularities. The computations take place on the first blow-up of the singularity.

Keywords

Harrison cohomologycotangent complexrational singularity32S3032S25
Type
Research Article
Information
Compositio Mathematica , Volume 140 , Issue 2 , March 2004 , pp. 528 - 540
Copyright
Foundation Compositio Mathematica 2004