On July 19, 2001 I gave an invited talk at CMAF at the University of Lisbon, Portugal.
The title of my talk was Muchnik and Medvedev Degrees of Pi01 Subsets of 2^omega. My abstract is available in several formats: DVI, PDF, PS, HTML. My slides are available in several formats: PDF, PS.
A list of my recent and upcoming talks is available.
My publication list is available.
I run FOM, an automated e-mail list for discussing foundations of mathematics.
t20@psu.edu / 29 January 2002