Departmental Colloquium 

September 18, 4:30 PM, Taplin Auditorium, Fine Hall
Speaker: Jean-Pierre Demailly, Grenoble

Title: Numerical characterization of positive cones in
Kähler geometry 

Abstract: We will review recent results on the
characterization of positive cones, namely the extension of
the Nakai-Moishezon criterion to the Kähler cone, and, in
the case of projective varieties, the relation between the
cone of positive currents and the cone of classes of
covering curves. These characterizations lead to some new
important facts in view of the classification of projective or
compact Kähler manifolds.