Speaker：Qimin Zhang（Université Côte d'Azur）
Time: 14:30-15:30, Jul 21, 2026
Venue: room 1124, Material Science Research Building (Section C)
In this talk, I will discuss my recent results concerning the positivity of tangent bundles of degree 4 weak Del Pezzo surfaces. Let S denote such a surface, I show that its tangent bundle T_S is almost nef. In addition, I willl also provide a classification of conic bundle structures on a given weak Del Pezzo surface. The total dual VMRT divisors associated to these conic bundle structures form the central technical tool to verify the almost nefness of T_S.
