An amenability property of algebras of functions on semidirect products of semigroups.
An application of Lie groupoids to a rigidity problem of 2-step nilmanifolds
We study a problem of isometric compact 2-step nilmanifolds using some information on their geodesic flows, where is a simply connected 2-step nilpotent Lie group with a left invariant metric and is a cocompact discrete subgroup of isometries of . Among various works concerning this problem, we consider the algebraic aspect of it. In fact, isometry groups of simply connected Riemannian manifolds can be characterized in a purely algebraic way, namely by normalizers. So, suitable factorization...
An application of peripherality to compact semigroups.
An associated mob of a topological group.
An Example of a Q-minimal Precompact Topological Group Containing a Nonminimal Closed Normal Subgroup.
An introduction to loopoids
We discuss a concept of loopoid as a non-associative generalization of Brandt groupoid. We introduce and study also an interesting class of more general objects which we call semiloopoids. A differential version of loopoids is intended as a framework for Lagrangian discrete mechanics.
An Iseomorphism Theorem for Positive Commutative Semigroups on the Plane
Analysis on compact Lie groups of large dimension and on connected compact groups
The study of Gaussian convolution semigroups is a subject at the crossroad between abstract and concrete problems in harmonic analysis. This article suggests selected open problems that are in large part motivated by joint work with Alexander Bendikov.
Analytic Baire spaces
We generalize to the non-separable context a theorem of Levi characterizing Baire analytic spaces. This allows us to prove a joint-continuity result for non-separable normed groups, previously known only in the separable context.
Analytische Vektoren von Faltungshalbgruppen II. Funktionenräume auf lokalkompakten Gruppen.
Analytische Vektoren von Faltungshalbgruppen III. Potentiale von Faltungshalbgruppen.
Approximation durch Polynomfunktionen auf universellen Algebren.
Asymptotic behavior and rectangular band structures in SL.
Autoaddition formulae and algebraic groups.