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P.D. Dr. Barbara Baumeister (Bielefeld): Moufang twin buildings and Kac-Moody groups

12.02.2015 | 17:15


Every reductive algebraic group acts nicely on a geometric object, the spherical building, and the simple algebraic and  classical groups are characterized by that property as Tits showed.

Ronan and Tits generalized the concept of spherical buildings to that of twin buildings in order to obtain geometric objects for the Kac-Moody groups. Twin buildings are defined in such a way that they possess similar properties to those of spherical buildings; for instance the Moufang property - named after Ruth Moufang - can also be defined for twin

We will introduce the relevant terminology and discuss whether a Kac-Moody group is characterized by its action on a Moufang twin building. Further we will ask (and answer) some fundamental questions about these objects.


ab  16:45 Uhr,

Arnimallee 3,  Raum 006


Koordinator:  Prof. Dr. Alexander Schmitt


Zeit & Ort

12.02.2015 | 17:15

Hörsaal 1, Arnimallee 3