The compression semigroup of a cone is connected.
The density of the image of the exponential function and spacious locally compact groups.
The exponential map and differential equations on real Lie groups.
The Foliation of Semigroups by Congruence Classes.
The Functional Equation. (Short Communication).
The geometry of a semi-direct extension of a Heisenberg type nilpotent group
The outer automorphism group of normalizers of maximal tori in connected compact Lie groups.
The structure of parabolic subgroups.
The surjectivity question for the exponential function of real Lie groups: A status report.
The Union of Compact Subgroups of a Connected Locally Compact Group.
The Volume of a Compact Lie Group.
The weak Paley-Wiener property for group extensions.
Théorie directe des groupes de Lie, I
Théorie directe des groupes de Lie, II
Théorie directe des groupes de Lie, III
Théorie directe des groupes de Lie, IV
Topologisch Linksengelsche Elemente.
Transitive riemannian isometry groups with nilpotent radicals
Given that a connected Lie group with nilpotent radical acts transitively by isometries on a connected Riemannian manifold , the structure of the full connected isometry group of and the imbedding of in are described. In particular, if equals its derived subgroup and its Levi factors are of noncompact type, then is normal in . In the special case of a simply transitive action of on , a transitive normal subgroup of is constructed with and a sufficient condition is given...
Treillis d'ondelettes associés aux groupes de Lorentz
Triangular stochastic matrices generated by infinitesimal elements
We show that each element in the semigroup of all non-singular upper (or lower) triangular stochastic matrices is generated by the infinitesimal elements of , which form a cone consisting of all upper (or lower) triangular intensity matrices.