6 citations · 19 across the 12 of their papers we have counts for
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math.OA2012★ 2 cited
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…
math.OA2012
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…
math.OA2012
Finite sums of projections in purely infinite simple C*-algebras with torsion K_0
V. Kaftal, P. N. Ng, S. Zhang
Assume that A is a purely infinite simple C*-algebra whose K_0 is a torsion group, namely, contains no free element. Then a positive element a in A can be written as a finite sum o…