55 citations · 69 across the 8 of their papers we have counts for
9 papers
Partially Positive Semidefinite Maps on -Semigroupoids and Linearisations
Aurelian Gheondea, Bogdan Udrea
Motivated by Cuntz-Krieger-Toeplitz systems associated to undirected graphs and representations of groupoids, we obtain a generalisation of the Sz-Nagy's Dilation Theorem for opera…
Some rigidity results for II factors arising from wreath products of property (T) groups
Ionut Chifan, Bogdan Teodor Udrea
We show that any infinite collection of icc, hyperbolic, property (T) groups satisfies the following von Neumann algebraic \emph{infinite product rigidity}…
Generalized -Gaussian von Neumann algebras with coefficients, II. Absence of central sequences
Marius Junge, Bogdan Udrea
We show that the generalized -gaussian von Neumann algebras with coefficients with a finite dimensional factor, dim sub-exponential and the di…
Generalized -Gaussian von Neumann algebras with coefficients, III. Unique prime factorization results
Marius Junge, Bogdan Udrea
We prove some unique prime factorization results for tensor products of type factors of the form arising from symmetric independent copies wit…
Generalized -Gaussian von Neumann algebras with coefficients, I. Relative strong solidity
Marius Junge, Bogdan Udrea
We define , the generalized -gaussian von Neumann algebras associated to a sequence of symmetric independent copies and to a subset $1 \in S =…
Some classification results for generalized q-gaussian algebras
Marius Junge, Stephen Longfield, Bogdan Udrea
To any trace preserving action of a countable discrete group on a finite von Neumann algebra and any orthogonal representation $π:G \to \mathcal O(\el…
Inner amenability for groups and central sequences in factors
Ionut Chifan, Thomas Sinclair, Bogdan Udrea
We show that a large class of i.c.c., countable, discrete groups satisfying a weak negative curvature condition are not inner amenable. By recent work of Hull and Osin, our result…
Aerodynamic Stability of Satellites in Elliptic Low Earth Orbits
Matthew Bailey, Brian Ladson, Stefan C. Mancas +2
Topical observations of the thermosphere at altitudes below are of great benefit in advancing the understanding of the global distribution of mass, composition, and dyn…
On the structural theory of II_1 factors of negatively curved groups, II: Actions by product groups
Ionut Chifan, Thomas Sinclair, Bogdan Udrea
This paper includes a series of structural results for von Neumann algebras arising from measure preserving actions by product groups on probability spaces. Expanding upon the meth…