19 citations · 20 across the 7 of their papers we have counts for
9 papers · 1 filter
The Global Glimm Property for C*-algebras of topological dimension zero
Ping Wong Ng, Hannes Thiel, Eduard Vilalta
We show that a C*-algebra with topological dimension zero has the Global Glimm Property (every hereditary subalgebra contains an almost full nilpotent element) if and only if it is…
Majorization in C*-algebras
Ping Wong Ng, Leonel Robert, Paul Skoufranis
We investigate the closed convex hull of unitary orbits of selfadjoint elements in arbitrary unital C*-algebras. Using a notion of majorization against unbounded traces, a characte…
Strict comparison of positive elements in multiplier algebras
Victor Kaftal, Ping Ng, Shuang Zhang
Main result: If a C*-algebra is simple, -unital, has finitely many extremal traces, and has strict comparison of positive elements by traces, then its multiplier also has strict…
Strict comparison of projections and positive combinations of projections in certain multiplier algebras
Victor Kaftal, P. W. Ng, Shuang Zhang
In this paper we investigate whether positive elements in the multiplier algebras of certain finite C*-algebras can be written as finite linear combinations of projections with pos…
Amenability and Uniqueness
A. Ciuperca, T. Giordano, P. W. Ng +1
The main result of this paper is a characterization of properly infinite injective von Neumann algebras and of nuclear C*-algebras by using a uniqueness theorem, based on generaliz…
Positive combinations of projections in von Neumann algebras and purely infinite simple C*-algebras
V. Kaftal, P. W. Ng, S. Zhang
We give an overview of the question: which positive elements in an operator algebra can be written as a linear combination of projections with positive coefficients. A special case…
Projection decomposition in multiplier algebras
V. Kaftal, P. W. Ng, S. Zhang
In this paper we present new structural information about the multiplier algebra Mult (A) of a sigma-unital purely infinite simple C*-algebra A, by characterizing the positive elem…
The Automorphism group of a simple -stable -algebra
Ping Wong Ng, Efren Ruiz
We study the automorphism group of a unital, simple, -stable -algebra. In this paper, we generalize the results by the authors in \cite{pr_auto} to $\mathcal{Z}…
The multiplier algebra of a nuclear quasidiagonal C*-algebra
P. W. Ng
The subject of quasidiagonality is of much interest in many places - among other things, in the classification program for simple unital separable nuclear C*-algebras. In this note…