SEMINAR: Groups and Combinatorics Seminar: Automorphisms and opposition in twin buildings
|Groups and Combinatorics Seminar: Automorphisms and opposition in twin buildings
Groups and Combinatorics Seminar
Alice Devillers (UWA)
will speak on
Automorphisms and opposition in twin buildings.
at 11am on Wednesday 9th of May in MLR2.
Abstract: Opposition in twin buildings generalises the notion of opposition in spherical buildings. With James Parkison and Hendrik Van Maldeghem, we looked at automorphisms mapping some/all residues to opposite residues.For instance we proved that an automorphism of a thick twin building (swapping the two halves) always maps at least one spherical residue to an opposite. However, if the building is also locally finite and 2-spherical, then not every residue of a given type can be mapped to an opposite.
Maths Lecture Room 2
Wed, 09 May 2012 11:00
Wed, 09 May 2012 11:45
Michael Giudici <[email protected]>
Mon, 07 May 2012 14:53
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