M A T H E M A T I C S S E M I N A R S 2007 Wednesday, 29 August at 14:30 hrs. Dr. Habib Marzougui (Ecole Normale Superieure de Bizerte, Tunisia) "Piecewise C^r (r \ ge 1) circle homeomorphisms and invariant measures" VENUE: SEMINAR ROOM (ICTP Main Building, first floor)