日時
2020年11月16日16:00 - 18:10
講演者
北山 貴裕 (東京大学 大学院数理科学研究科 准教授)
会場
via Zoom
言語
英語

In 3-dimensional topology the great progress during the last two decades revealed that various properties of 3-manifolds are well understood from their fundamental groups. I will give an introduction to the study of splittings of 3-manifolds along surfaces, with an emphasis on an application of group representations. A fundamental and difficult problem in general is to find surfaces essentially embedded in a given 3-manifold. I will explain how such surfaces are detected by deformations of representations of the fundamental group, and what information of detected surfaces is described in terms of topological invariants derived from representations.

*Please contact Keita Mikami's mail address to get access to the Zoom meeting room.

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