Results 51 to 60 of about 461,348 (110)

Jordan operator algebras: basic theory [PDF]

open access: yes, 2017
Jordan operator algebras are norm‐closed spaces of operators on a Hilbert space which are closed under the Jordan product. The discovery of the present paper is that there exists a huge and tractable theory of possibly nonselfadjoint Jordan operator ...
D. Blecher, Zhenhua Wang
semanticscholar   +1 more source

The mathematical legacy of William Arveson [PDF]

open access: yesarXiv, 2012
This is a retrospective of some of William Arveson's many contributions to operator theory and operator algebras.
arxiv  

Semigroup homomorphisms on matrix algebras [PDF]

open access: yesarXiv, 2017
We explore the connection between ring homomorphisms and semigroup homomorphisms on matrix algebras over rings or $C^*$-algebras.
arxiv  

Boundary Representations for Operator Algebras [PDF]

open access: yesarXiv, 2001
All operator algebras have (not necessarily irreducible) boundary representations. A unital operator algebra has enough such boundary representations to generate its C*-envelope.
arxiv  

Fuglede-Putnam theorem for locally measurable operators [PDF]

open access: yesarXiv, 2016
We extend the Fuglede-Putnam theorem from the algebra $B(H)$ of all bounded operators on the Hilbert space $H$ to the algebra of all locally measurable operators affiliated with a von Neumann algebra.
arxiv  

Jordan maps and triple maps on algebras of unbounded operators [PDF]

open access: yesarXiv, 2005
The paper contains results on the structure of Jordan maps and several kinds of triple maps on standard algebras of unbounded operators in Hilbert spaces. These results are unbounded counterparts to results on algebras of bounded operators obtained by Lu, Moln\'ar and others ([3,4,6 -- 10]).
arxiv  

Similarity problems and length [PDF]

open access: yesarXiv, 2000
This is a survey of the author's recent results on the Kadison and Halmos similarity problems and the closely connected notion of ``length'' of an operator algebra.
arxiv  

Extension of positive maps [PDF]

open access: yesarXiv, 2018
We prove two extension theorems for positive maps from operator systems into matrix ...
arxiv  

The Calkin algebra has outer automorphisms [PDF]

open access: yesarXiv, 2006
Assuming the continuum hypothesis, we show that the Calkin algebra has 2^{aleph_1} outer automorphisms.
arxiv  

Convergence of Fuzzy Tori and Quantum Tori for the quantum Gromov-Hausdorff Propinquity: an explicit approach

open access: yes, 2013
Quantum tori are limits of finite dimensional C*-algebras for the quantum Gromov-Hausdorff propinquity, a metric defined by the author as a strengthening of Rieffel's quantum Gromov-Hausdorff designed to retain the C*-algebraic structure.
Latremoliere, Frederic
core  

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