On Gel'fand-Graev characters of reductive groups with disconnected centre.
On general linear semigroups.
On groups with root system of type .
On Incidence Structures in Finite Classical Groups.
On invariants of a set of matrices.
On K2 (...) and presentations of SLn (...) in the real quadratic case.
On lattice automorphisms of the special linear group
We show, with a counterexample, that proposition 3 in [2], as it stands, is not correct; we prove however that by changing the hypothesis the thesis of the proposition remains still valid.
On maximal compact subsemigroups of the endomorphism semigroup of an n-dimensional complex vector space.
On maximal subgroups of the general linear group over the field of rational functions.
On minimal permutation representations of classical simple groups.
On modules over the Hecke algebra of a p-adic group.
On mutual commutants of generalized carpet subgroups.
On normal abelian subgroups in parabolic groups
Let be a reductive algebraic group, a parabolic subgroup of with unipotent radical , and a closed connected subgroup of which is normalized by . We show that acts on with finitely many orbits provided is abelian. This generalizes a well-known finiteness result, namely the case when is central in . We also obtain an analogous result for the adjoint action of on invariant linear subspaces of the Lie algebra of which are abelian Lie algebras. Finally, we discuss a connection...
On normal subgroups of over rings with many units
On observable subgroups of complex analytic groups and algebraic structures on analytic homogeneous spaces.
On overgroups of and in their minimal representations.
On parametrization of the linear and unitary groups in terms of Dirac matrices.
On Projective Planes of Type (5, m).
On quasihomogeneous manifolds – via Brion-Luna-Vust theorem
We consider a smooth projective variety on which a simple algebraic group acts with an open orbit. We discuss a theorem of Brion-Luna-Vust in order to relate the action of with the induced action of on the normal bundle of a closed orbit of the action. We get effective results in case and .
On rapid generation of .