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A cusp singularity with no Galois cover by a complete intersection

Author: David E. Anderson
Journal: Proc. Amer. Math. Soc. 132 (2004), 2517-2527
MSC (2000): Primary 14B05, 14J17
Published electronically: April 8, 2004
MathSciNet review: 2054775
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Abstract: With an explicit example, we confirm a conjecture by Neumann and Wahl that there exist cusps with no Galois cover by a complete intersection. Some computational techniques are reviewed, and a method for deciding whether a given cusp has a complete intersection Galois cover is developed.

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Additional Information

David E. Anderson
Affiliation: Department of Mathematics, Columbia University, New York, New York 10027
Address at time of publication: Department of Mathematics, University of Michigan, 2074 East Hall, Ann Arbor, Michigan 48109

Received by editor(s): December 6, 2001
Received by editor(s) in revised form: January 8, 2003
Published electronically: April 8, 2004
Additional Notes: Supported by the NSF’s VIGRE Fellowship through the Columbia University Department of Mathematics. The author is greatly indebted to Professor Walter Neumann for his guidance.
Communicated by: Ronald A. Fintushel
Article copyright: © Copyright 2004 American Mathematical Society

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