Abstract
The Janko group acts regularly on six rank four thin residually connected geometries. Two of them are polytopes of type and . In this paper, we show that starting from the polytope, the five other thin geometries may be constructed in a simple manner.
Citation
Michael Ian Hartley. Dimitri Leemans. "On the thin regular geometries of rank four for the Janko group $J_1$." Innov. Incidence Geom. 1 181 - 190, 2005. https://doi.org/10.2140/iig.2005.1.181
Information