92 citations
- Czech Academy of Sciences, Institute of MathematicsCZ4 papers
- University of AntwerpBE3 papers
- Georgia State UniversityUS1 paper
- Hôpital Émile-RouxFR1 paper
- Institute of Mathematics and InformaticsBG1 paper
- Max Planck Institute for Nuclear PhysicsDE1 paper
- Northeastern UniversityUS1 paper
- University at Buffalo, State University of New YorkUS1 paper
- University of AlmeríaES1 paper
- University of UtahUS1 paper
13 papers
Characteristic functions for multicontractions and automorphisms of the unit ball
Chafiq Benhida, Dan Timotin
A \emph{multicontraction} on a Hilbert space $\HH$ is an -tuple of operators acting on $\HH$, such that $\sum_{i=1}^n T_i T_i^*\le \1_\HH$. We obtain some resu…
Some bialgebroids constructed by Kadison and Connes-Moscovici are isomorphic
Florin Panaite, Freddy Van Oystaeyen
We prove that a certain bialgebroid introduced recently by Kadison is isomorphic to a bialgebroid introduced earlier by Connes and Moscovici. At the level of total algebras, the is…
A structure theorem for quasi-Hopf comodule algebras
Florin Panaite, Freddy Van Oystaeyen
If H is a quasi-Hopf algebra and B is a right H-comodule algebra such that there exists v:H\to B a morphism of right H-comodule algebras, we prove that there exists a left H-module…
Sasaki--Weyl connections on CR manifolds
Liana David
We introduce and study the notion of Sasaki--Weyl manifold, which is a natural generalization of the notion of Sasaki manifold. We construct a reduction of Sasaki--Weyl manifolds a…
Amenability, completely bounded projections, dynamical systems and smooth orbits
Daniel Beltiţă, Bebe Prunaru
We describe a general method to construct completely bounded idempotent mappings on operator spaces, starting from amenable semigroups of completely bounded mappings. We then explo…
On a Problem of Bremermann Concerning Runge Domains
Cezar Joiţa
We give an example of a bounded Stein domain in , with smooth boundary, which is not Runge and whose intersection with every complex line is simply connected.