6 citations · 19 across the 12 of their papers we have counts for
12 papers
Purely infinite corona algebras
Victor Kaftal, P. W. Ng, Shuang Zhang
Let A be a simple, sigma-unital, non-unital C*-algebra, with metrizable tracial simplex T(A), which is projection-surjective and injective and has strict comparison of positive ele…
The minimal ideal in multiplier algebras
Victor Kaftal, P. W. Ng, Shuang Zhang
Let be a simple, -unital, non-unital, non-elementary C*-algebra and let be the intersection of all the ideals of that properly co…
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…
Commutators and linear spans of projections in certain finite C*-algebras
Victor Kaftal, Ping W. Ng, Shuang Zhang
Assume that A is a unital separable simple C*-algebra with real rank zero, stable rank one, strict comparison of projections, and that its tracial simplex T(A) has a finite number…
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…