Recent and upcoming talks by Alessandro Vignati

Alessandro Vignati: Set theoretical dichotomies in the theory of continuous quotients

Place: Fields Institute (Room 210) Date: April 28, 2017 (13:30-15:00) Speaker: Alessandro Vignati, York University Title: Set theoretical dichotomies in the theory of continuous quotients Abstract: We state and (depending on time) prove some dichotomies of set theoretical nature arising in the theory of continuous quotients. continue reading…

2017 North American ASL Meeting: March 20-23, 2017

Conference web site Plenary speakers M. Aschenbrenner (UCLA) C. Conley (Carnegie Mellon University) I. Kalimullin (Kazan Federal Univeristy) P. Koellner (Harvard University) A. Medvedev (City College of New York) A. Rinot (Bar-Ilan University) M. continue reading…

Alessandro Vignati: CH and homeomorphisms of Stone-Cech remainders

Place: Fields Institute (Room 210) Date: June 3rd, 2016 (13:30-15:00) Speaker: Alessandro Vignati Title: CH and homeomorphisms of Stone-Cech remainders Abstract: If X is locally compact and Polish, it makes sense to ask how many homeomorphisms does X*, the Stone Cech remainder of X, have. continue reading…

Alessandro Vignati : Forcing axioms and Operator algebras: a lifting theorem for reduced products of matrix algebras

Place: Fields Institute (Room 210) Time and date:  01/05/2015  (13:30-15:00) Speaker:  Alessandro Vignati Title: Forcing axioms and Operator algebras: a lifting theorem for reduced products of matrix algebras Abstract: Inspired by the work of Farah and others in the application of forcing axioms to operator algebras, we prove a correspondent of a lifting theorem in a continuous setting. continue reading…

Alessandro Vignati: An algebra whose subalgebras are characterized by density

25  April 2014, 13:30–15:00 Fields institute, Room 210 Speaker:  Alessandro Vignati. Title: An algebra whose subalgebras are characterized by density. Abstract: A long-standing open problem is whether or not every amenable operator algebra is isomorphic to a C*-algebra. continue reading…