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BEST 5 - Boise Extravaganza in Set Theory
March 29-31, 1996
Boise State University
Boise, ID, USA

Organizers
Tomek Bartoszynski, Marion Scheepers

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The finite-to-one Rudin-Keisler ordering
by
Claude Laflamme
University of Calgary
Coauthors: Jianping Zhu

We discuss the Rudin-Keisler ordering of ultrafilters restricted to finite-to-one fuctions and even monotone finite-to-one functions. In particular we show that in ZFC there is an ultrafilter with no Q-point below in this ordering. We will indicate connections with Continua theory.

Date received: March 18, 1996

Copyright © 1996 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 Conferences Inc. Document # caac-07.