Gregory Hjorth, 1963-2011

Greg Hjorth died unexpectedly on January 13. He was 47.  Greg received his degree from UC Berkeley under the supervision of Hugh Wooding in 1993.  He held positions at Caltech, UCLA, and the University of Melbourne.  Together with Alexander Kechris, he recieved the ASL's Karp Prize in 2003. Last year, he was chosen as Tarski … Continue reading Gregory Hjorth, 1963-2011

Proof by Extortion

Along the lines of philosophers' "proofs that p" and methods of mathematical proof, Saturday Morning Breakfast Cereal brings you even better methods of proof: