Plural Logicism, 14th Congress of Logic, Methodology and Philosophy of Science, Nancy, July 2011 (contributed)

Logicism without Numbers, (with M. Carrara and E. Martino), Cogito Day VI, Bologna, June 2011 (invited)

The Iterative Conception of Set (G. Boolos), discussion leader, Cogito seminars in Philosophy of Mathematics, Cogito Research Center in Philosophy, University of Bologna & University of Padua