### Wilhelm Killing Kolloquium: Prof. Dr. Ruth Charney (Brandeis University): per ZOOM: Searching for Hyperbolicity

##### Thursday, 21.01.2021 16:30 per ZOOM: Link to Zoom info

While groups are defined as algebraic objects, they can also be viewed as symmetries of geometric objects. This viewpoint gives rise to powerful tools for studying infinite groups. The work of Max Dehn in the early 20th century on groups acting on the hyperbolic plane was an early indication of this phenomenon. In the 1980s, Dehn's ideas were vastly generalized by Mikhail Gromov to a large class of groups, now known as hyperbolic groups. In recent years there has been an effort to push these ideas even further. If a group fails to be hyperbolic, might it still display some hyperbolic behavior? Might some of the techniques used in hyperbolic geometry still apply? In this talk I will begin with an introduction to some basic ideas in geometric group theory, then discuss more recent work on extending these ideas to more general contexts.

Angelegt am Tuesday, 13.10.2020 14:36 von mathsekr

Geändert am Wednesday, 14.04.2021 11:15 von mathsekr

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Kolloquium Wilhelm Killing