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Rigidity of Kleinian groups

Department Colloquium

Rigidity of Kleinian groups

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Hee Oh, Yale University

In-Person and Online Talk听

Discrete subgroups of PSL(2,C) are called Kleinian groups. 听Mostow rigidity theorem (1968) says that Kleinian groups of finite co-volume (=lattices) do not admit any faithful discrete representation into PSL(2,C) except for conjugations. I will present a new rigidity theorem for finitely generated Kleinian groups which are not necessarily lattices and explain how this theorem compares with Sullivan鈥檚 rigidity theorem (1981).

This talk should be听accessible听to beginning graduate students. (Based on joint work with Dongryul Kim).