8 citations · 8 across the 2 of their papers we have counts for
2 papers
math.GR2008★ 8 cited
A Quasi Curtis-Tits-Phan theorem for the symplectic group
Rieuwert J. Blok Corneliu Hoffman
We obtain the symplectic group $\SP(V)$ as the universal completion of an amalgam of low rank subgroups akin to Levi components. We let $\SP(V)$ act flag-transitively on the geomet…
math.CO2003
Topological properties of active orders for matroid bases
Rieuwert Blok, Bruce Sagan
Las Vergnas introduced several lattice structures on the bases of an ordered matroid M by using their external and internal activities. He also noted that when computing the Moebiu…