7 citations · 67 across the 46 of their papers we have counts for
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The carpenter and Schur--Horn problems for masas in finite factors
Ken Dykema, Junsheng Fang, Don Hadwin +1
Two classical theorems in matrix theory, due to Schur and Horn, relate the eigenvalues of a self-adjoint matrix to the diagonal entries. These have recently been given a formulatio…
MF-traces and a Lower Bound for the Topological Free Entropy Dimension in Unital C*-algebras
Don Hadwin, Qihui Li, Weihua Li +1
We continue previous work on Voiculescu's topological free entropy dimension δ_{top}. We introduce the notions of MF-trace, MF-ideal, and MF-nuclearity and use these concepts to ob…
The Correlation Numerical Range of a Matrix and Connes' Embedding Problem
Don Hadwin, Deguang Han
We define a new numerical range of an n\timesn complex matrix in terms of correlation matrices and develop some of its properties. We also define a related numerical range that ari…
Approximate double commutants in von Neumann algebras
Don Hadwin
Richard Kadison showed that not every commutative von Neumann subalgebra of a factor von Neumann algebra is equal to its relative double commutant. We prove that every commutative…
Free Products of Generalized RFD C*-algebras
Don Hadwin
If is an infinite cardinal, we say a C*-algebra is residually less than dimensional, if the family of representations of on Hilbert s…
Null-orbit reflexive operators
Don Hadwin, Ileana Ionascu, Hassan Yousefi
We introduce and study the notion of null-orbit reflexivity, which is a slight perturbation of the notion of orbit-reflexivity. Positive results for orbit reflexivity and the recen…