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Canadian Number Theory Association VIII Meeting
June 20-25, 2004
The Fields Institute
Toronto, ON, Canada

Organizers
John Friedlander (Toronto) and Cam Stewart (Waterloo)

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Singular Primes for Three Point Covers
by
David P. Roberts
University of Minnesota Morris

We discuss how Katz's theory of rigid local systems forces certain three point covers to have a small set of singular primes. Occasionally covers outside this class can have a similarly small set of singular primes in a way which currently seems accidental. We present examples with singular set {2, 3}, forced in cases with Galois group W(E6) and accidental in cases with S18, S28 and S33.

Date received: March 13, 2004

Copyright © 2004 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Mathematical Conference Abstracts. Document # calz-32.