(1) TU Braunschweig, Institut für Analysis, Abteilung für Topologie, Pockelsstr. 14, D-38106 Braunschweig, Germany;(2) Seminarie voor Meetkunde en Kombinatoriek, Rijksuniversiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium
Abstract:
We investigate the derived structures of compact polygons at half-regular and at regular points. This enables us to give a geometric characterization of the real or complex split Cayley hexagon.