Algebraic Geometry Seminar

The Algebraic Geometry Seminar features talks on all branches of algebraic geometry, as well as related research fields including, and not limited to: number theory, complex geometry, and differential geometry.
Organizer(s): 

For more information about this seminar, contact Gabriele Di Cerbo or János Kollár.

Please click on seminar title for complete abstract.

October 24, 2017
4:30pm - 5:30pm
Transcendence of period maps

Period domains D can be described as certain analytic open sets of flag varieties; due to the presence of monodromy, however, the period map of a family of algebraic varieties lands in a quotient D/\Gamma by an arithmetic group.  In the very special case when D/\Gamma is itself algebraic, understanding the interaction between algebraic structures on the source and target of the uniformization D\rightarrow D/\Gamma is a crucial component of the modern approach to the André-Oort conjecture.  We prove a version of the Ax-Schanuel conjecture for general period maps X\rightarrow D/\Gamma which...

Location
Fine Hall 322
Speaker: Ben Bakker,
University of Georgia
November 7, 2017
4:30pm - 5:30pm
Dominating varieties by liftable ones.

Given a smooth projective variety over an algebraically closed field of positive characteristic, can we dominate it by another smooth projective variety that lifts to characteristic 0? We give a negative answer to this question.

Location
Fine Hall 314
Speaker: Remy van Dobben de Bruyn,
Columbia University
November 9, 2017
4:30pm - 5:30pm
TBA-Jingjun Han
Location
Fine Hall 322
Speaker: Jingjun Han Institution,
Peking University
November 21, 2017
4:30pm - 5:30pm
TBA-Antonella Grassi
Location
Fine Hall 322
Speaker: Antonella Grassi,
UPenn
November 28, 2017
4:30pm - 5:30pm
TBA-Xudong Zheng
Location
Fine Hall 322
Speaker: Xudong Zheng ,
Johns Hopkins
December 5, 2017
4:30pm - 5:30pm
TB-Federico Buonerba
Location
Fine Hall 322
Speaker: Federico Buonerba,
New York University
December 12, 2017
4:30pm - 5:30pm
TBA-Lev Borisov
Location
Fine Hall 322
Speaker: Lev Borisov,
Rutgers University