Orlando, Florida(or the ps version), 1996 AMS-ASL joint meeting.
San Diego, California, 1997(or the ps version, or the tex file), 1997 AMS-ASL joint meeting (special session in set theory, organised by Matt Foreman).
Boston, 1997(or the ps version, or the tex file), Annual General Meeting of the Association of Symbolic Logic.
University of Illinois at Urbana 1997 (or the ps version, or the tex file), Department Colloquium.
UCLA 1998 (or the ps file) department colloquium.
ICM meeting (or the ps, or the latex version) at August 1998.
Prague (or the ps, or the latex2e version) annual European meeting of the ASL, August 1998.
London (or the ps, or the latex2e version) `Set Theory Friends and Neighbors' meeting, organized by Mirna Dzamonja and Charles Morgan, September 1998 .
Berkeley (or the ps, or the latex2e version) Logic Colloquium, March 1999.
Las Vegas sectional meeting (or the ps, or the latex2e version) organized by Derrick Dubose and Doug Burke, April 1999.
Tutorial at ASL European meeting (or the ps, or the latex version) at Utrecht, Netherlands, August 1999.
Department Colloquium (or the ps, or the latex version) at Rutgers, February 2001.
Las Vegas (or the ps, or the latex2e version), April 2001.
Barcelona (or the ps, or the latex2e version), September, 2003.
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