Topology Seminar
Event starts on this day
Apr
7
2025
Event Starts at:
2:00 pm
– 3:00 pm
In Person (view details)
Featured Speaker(s):
Seraphina Lee of the University of Chicago
Cost:
Free
Event starts on this day
Apr
7
2025
Event starts at this time
2:00 pm
– 3:00 pm
In Person (view details)
Featured Speaker(s):
Seraphina Lee of the University of Chicago
Cost:
Free
Lefschetz fibrations with infinitely many sections
Description
A Lefschetz fibration M^4 \to S^2 is a generalization of a surface bundle which also allows finitely many nodal singular fibers. The Arakelov--Parshin rigidity theorem implies that nontrivial, holomorphic Lefschetz fibrations of genus g \geq 2 admit