Virtually algebraically fibered congruence subgroups

Ian Agol (UC Berkeley)

28-Apr-2020, 15:30-16:00 (4 years ago)

Abstract: Addressing a question of Baker and Reid, we give a criterion to show that an arithmetic group has a congruence subgroup that is algebraically fibered. Some examples to which the criterion applies include: a hyperbolic four-manifold group containing infinitely many Bianchi groups and a complex hyperbolic surface group.

This is joint work with Matthew Stover.

algebraic topologydifferential geometrydynamical systemsgroup theorygeometric topologysymplectic geometry

Audience: researchers in the topic

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