74 citations · 269 across the 21 of their papers we have counts for
23 papers
A quantization of coarse spaces and uniform Roe algebras
Bruno M. Braga, Joseph Eisner, David Sherman
We propose a quantization of coarse spaces and uniform Roe algebras. The objects are based on the quantum relations introduced by N. Weaver and require the choice of a represented…
Support expansion -algebras
Bruno de Mendonça Braga, Joseph Eisner, David Sherman
We consider operators on spaces that expand the support of vectors in a manner controlled by some constraint function. The primary objects of study are -algebras…
The universal C*-algebra of a contraction
Kristin Courtney, David Sherman
We say that a contractive Hilbert space operator is universal if there is a natural surjection from its generated C*-algebra to the C*-algebra generated by any other contraction. A…
Matrices similar to partial isometries
Stephan Ramon Garcia, David Sherman
We determine when a matrix is similar to a partial isometry, refining a result of Halmos--McLaughlin.
On the similarity of AB and BA for normal and other matrices
Stephan Ramon Garcia, David Sherman, Gary Weiss
It is well-known that and are similar when and are complex square Hermitian matrices. In this note we answer a question of F. Zhang by demonstrating that similari…
Existentially closed II_1 factors
Ilijas Farah, Isaac Goldbring, Bradd Hart +1
We examine the properties of existentially closed (R^omega-embeddable) II_1 factors. In particular, we use the fact that every automorphism of an existentially closed (R^omega-embe…