Birational geometry of complex hyperbolic manifolds

Topology of Algebraic Varieties
Topic:Birational geometry of complex hyperbolic manifolds
Speaker:Gabriele di Cerbo
Affiliation:Columbia University
Date:Wednesday, November 19
Time/Room:11:15am - 12:15pm/S-101
Video Link:

In 1984 Hirzebruch constructed the first examples of smooth toroidal compactifications of ball quotients with non-nef canonical divisor. In this talk, I will show that if the dimension is greater or equal than three then such examples cannot exist. We will use this result to reprove and improve classical theorems, such as boundedness of hyperbolic manifolds, Baily-Borel embeddings and cusps count.