Event
Nicolas Radu, Universit茅 catholique de Louvain
Monday, November 21, 2016 15:30to16:30
Burnside Hall
Room 1234, 805 rue Sherbrooke Ouest, Montreal, QC, H3A 0B9, CA
A locally non-Desarguesian A2-tilde building admitting a uniform lattice.
An A2-tilde building is a simply connected simplicial complex of dimension 2 such that each sphere of radius 1 centered at a vertex is isomorphic to the incidence graph of a projective plane. In 1986, William Kantor asked the problem of constructing an A2-tilde building with a cocompact lattice and whose local projective planes are finite and non-Desarguesian. In this talk, I will tell the exciting story of how such an A2-tilde building could be discovered.