Very Informal Gathering at UCLA

I am Stephen G. Simpson, a mathematician at the Pennsylvania State University.

During January 30 - February 1, 2009 I participated as an invited speaker at the 15th Very Informal Gathering of Logicians at UCLA. This VIG was in honor of the 60th birthday of my former Ph.D. student John Steel.

The subject of my 50-minute talk was: Mass Problems. My abstract is available in several formats: DVI, PS, PDF, HTML, plain text.

My slides are available in several formats: PDF, PS.

A list of my recent and upcoming talks is available.

My publication list is available. / 3 February 2009