7 citations · 14 across the 11 of their papers we have counts for
5 papers · 1 filter
An isomorphism of unitals, and an isomorphism of classical groups
Markus Johannes Stroppel
An isomorphism between two hermitian unitals is proved, and used to treat isomorphisms of classical groups that are related to the isomorphism between certain simple real Lie algeb…
Hodge Operators and Exceptional Isomorphisms between Unitary Groups
Linus Kramer, Markus J. Stroppel
We give a generalization of the Hodge operator to spaces endowed with a hermitian or symmetric bilinear form over arbitrary fields, including the characteristic two cas…
Hodge operators and groups of isometries of diagonalizable symmetric bilinear forms in characteristic two
Linus Kramer, Markus J. Stroppel
We study groups of isometries on non-alternating symmetric bilinear forms on vector spaces of characteristic two, and actions of these groups on exterior powers of the space, viewe…
Moufang sets generated by translations in unitals
Theo Grundhöfer, Markus J. Stroppel, Hendrik Van Maldeghem
We consider unitals of order with two points which are centers of translation groups of order . The group generated by these translations induces a Moufang set on the bl…
Stabilizers of Subspaces under Similitudes of the Klein Quadric, and Automorphisms of Heisenberg Algebras
Michael Gulde, Markus Stroppel
We determine the groups of automorphisms and their orbits for nilpotent Lie algebras of class 2 and small dimension, over arbitrary fields (including the characteristic 2 case).