4 citations · 7 across the 3 of their papers we have counts for
3 papers
math.OA2008★ 1 cited
Strong sums of projections in von Neumann factors
Victor Kaftal, Ping Wong Ng, Shuang Zhang
This paper presents necessary and sufficient conditions for a positive bounded operator on a separable Hilbert space to be the sum of a finite or infinite collection of projections…
math.FA2007★ 2 cited
Operator valued frames
Victor Kaftal, David Larson, Shuang Zhang
We develop a natural generalization of vector-valued frame theory, we term operator-valued frame theory, using operator-algebraic methods. This extends work of the second author an…
math.OA2007★ 4 cited
Operator valued frames on C*-modules
Victor Kaftal, David Larson, Shuang Zhang
Frames on Hilbert C*-modules have been defined for unital C*-algebras by Frank and Larson and operator valued frames on a Hilbert space have been studied in arXiv.0707.3272v1.[math…