A cusp singularity with no Galois cover by a complete intersection
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.
- Publication:
-
arXiv Mathematics e-prints
- Pub Date:
- September 2001
- DOI:
- 10.48550/arXiv.math/0109112
- arXiv:
- arXiv:math/0109112
- Bibcode:
- 2001math......9112A
- Keywords:
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- Mathematics - Algebraic Geometry;
- 14B05 14J17 32S25
- E-Print:
- 10 pages, LaTeX2e, no figures. Edited for submission to Proc. Amer. Math. Soc