10 Citations
Finite-dimensional approximations and semigroup coactions for operator algebras
- Mathematics
- 2021
The residual finite-dimensionality of a C-algebra is known to be encoded in a topological property of its space of representations, stating that finite-dimensional representations should be dense…
Finite dimensional approximations in operator algebras
- Mathematics
- 2022
. A non-self-adjoint operator algebra is said to be residually finite dimensional (RFD) if it embeds into a product of matrix algebras. We characterize RFD operator algebras in terms of their matrix…
Finite Dimensionality in the Non-commutative Choquet Boundary: Peaking Phenomena and C*-Liminality
- MathematicsInternational Mathematics Research Notices
- 2021
We explore the finite-dimensional part of the non-commutative Choquet boundary of an operator algebra. In other words, we seek finite-dimensional boundary representations. Such representations may…
Finite-dimensionality in the non-commutative Choquet boundary: peaking phenomena and $\mathrm{C}^*$-liminality.
- Mathematics
- 2020
We explore the finite-dimensional part of the non-commutative Choquet boundary of an operator algebra. In other words, we seek finite-dimensional boundary representations. Such representations may…
Multiplier tests and subhomogeneity of multiplier algebras
- MathematicsDocumenta Mathematica
- 2022
Multipliers of reproducing kernel Hilbert spaces can be characterized in terms of positivity of $n \times n$ matrices analogous to the classical Pick matrix. We study for which reproducing kernel…
Some notes on the universal C*-algebra of a contraction
- Mathematics
- 2018
We say that a contractive Hilbert space operator is universal if there is a natural surjection from its generated C*-algebra to the C*-algebra generated by any other contraction. A universal…
Maximal C⁎-covers and residual finite-dimensionality
- MathematicsJournal of Mathematical Analysis and Applications
- 2022
Identification of maximal $C^*$-covers of some operator algebras
- Mathematics
- 2022
In 1999, Blecher [2] introduced the concept of the maximal C-cover of an operator algebra. This algebra encodes the completely contractive representation theory of an operator algebra. In particular,…
Quasitriangular operator algebras
- Mathematics
- 2022
. We give characterizations of quasitriangular operator algebras along the line of Voiculescu’s characterization of quasidiagonal C ∗ -algebras. their representations. Note that in the selfadjoint…
C*-envelopes for operator algebras with a coaction and co-universal C*-algebras for product systems
- MathematicsAdvances in Mathematics
- 2022
References
SHOWING 1-10 OF 53 REFERENCES
Residual finite dimensionality and representations of amenable operator algebras
- MathematicsJournal of Mathematical Analysis and Applications
- 2019
Operator Spaces and Residually Finite-Dimensional C*-Algebras
- Mathematics
- 1994
Abstract For every operator space X the C *-algebra containing it in a universal way is residually finite-dimensional (that is, has a separating family of finite-dimensional representations). In…
Modules over Operator Algebras, and the Maximal C*-Dilation☆☆☆
- Mathematics
- 1999
Abstract We continue our study of the general theory of possibly nonselfadjoint algebras of operators on a Hilbert space, and modules over such algebras, developing a little more technology to…
Crossed Products of Operator Algebras
- MathematicsMemoirs of the American Mathematical Society
- 2019
We study crossed products of arbitrary operator algebras by locally compact groups of completely isometric automorphisms. We develop an abstract theory that allows for generalizations of many of the…
Elements of $C^{\ast }$ -algebras Attaining their Norm in a Finite-dimensional Representation
- MathematicsCanadian Journal of Mathematics
- 2019
Abstract We characterize the class of RFD $C^{\ast }$ -algebras as those containing a dense subset of elements that attain their norm under a finite-dimensional representation. We show further that…
Noncommutative semialgebraic sets and associated lifting problems
- Mathematics
- 2009
We solve a class of lifting problems involving approximate polynomial relations (soft polynomial relations). Various associated C*-algebras are therefore projective. The technical lemma we need is a…
On residually finite-dimensional *-algebras
- Mathematics
- 1995
Exel and Loring have listed several conditions that are equivalent to the residual finite-dimensionality of a C*-algebra. We review and extend this list. A C*-algebra is said to be residually…
BOUNDARY REPRESENTATIONS FOR FAMILIES OF REPRESENTATIONS OF OPERATOR ALGEBRAS AND SPACES
- Mathematics
- 2005
In analogy with the peak points of the Shilov boundary of a uni- form algebra, Arveson defined the notion of boundary representations among the completely contractive representations of a unital…