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20112026
most citedA generalization of the Voiculescu theorem for normal operators in semifinite von Neumann algebras

10 citations · 20 across the 15 of their papers we have counts for

collaborators

15 papers

math.OA2026

The similarity of irreducible operators in factors

Minghui Ma, Rui Shi, Shanshan Yang

An operator in a separable factor is said to be irreducible in if the von Neumann subalgebra generated by is an irreducible subfactor o…

math.OA2019

Normed ideal perturbation of irreducible operators in semifinite von Neumann factors

Rui Shi

In [10], Halmos proved an interesting result that the set of irreducible operators is dense in in the sense of Hilbert-Schmidt approximation. In a von Neum…

math.OA2019

Reducible operators in non- type factors

Junhao Shen, Rui Shi

A famous question of Halmos asks whether every operator on a separable infinite-dimensional Hilbert space is a norm limit of reducible operators. In [30], Voiculescu gave this prob…

math.OA2018

On irreducible operators in factor von Neumann algebras

Junsheng Fang, Rui Shi, Shilin Wen

Let be a factor von Neumann algebra with separable predual and let . We call an irreducible operator (relative to ) if is an…

math.OA2018★ 1 cited

Approximate equivalence of representations of AH algebras into semifinite von Neumann factors

Junhao Shen, Rui Shi

In this paper, we prove a non-commutative version of the Weyl-von Neumann theorem for representations of unital, separable AH algebras into countably decomposable, semifinite, prop…

math.OA2018★ 1 cited

A note on the Voiculescu's theorem for commutative C-algebras in semifinite von Neumann algebras

Don Hadwin, Rui Shi

In the current paper, we generalize the "compact operator" part of the Voiculescu's non-commutative Weyl-von Neumann theorem on approximate equivalence of unital -homomorphisms…

math.OA2017

Perturbations of self-adjoint operators in semifinite von Neumann algebras: Kato-Rosenblum theorem

Qihui Li, Junhao Shen, Rui Shi +1

In the paper, we prove an analogue of the Kato-Rosenblum theorem in a semifinite von Neumann algebra. Let be a countably decomposable, properly infinite, semifinite v…

math.OA2017★ 10 cited

A generalization of the Voiculescu theorem for normal operators in semifinite von Neumann algebras

Qihui Li, Junhao Shen, Rui Shi

In this paper, we provide a generalized version of the Voiculescu theorem for normal operators by showing that, in a von Neumann algebra with separable pre-dual and a faithful norm…

math.OA2014

On a class of operators in the hyperfinite factor

Zhangsheng Zhu, Junsheng Fang, Rui Shi

Let be the hyperfinite factor and let be two generators of such that and for an irrational number . In this paper we st…

math.OA2013

Unitary operators in the orthogonal complement of a type von Neumann algebra in a type factor

Xiaoyan Zhou, Rui Shi

It is well-known that the equality holds for an i.c.c. group and a subgroup in , where…

math.OA2013

A reduction theory for operators in type von Neumann algebras

Rui Shi

In this paper, we study the structure of operators in a type von Neumann algebra . Inspired by the Jordan canonical form theorem, our main motivation…

math.FA2012★ 1 cited

A similarity invariant of a class of n-normal operators in terms of K-theory

Chunlan Jiang, Rui Shi

In this paper, we prove an analogue of the Jordan canonical form theorem for a class of -normal operators on complex separable Hilbert spaces in terms of von Neumann's reduction…

math.FA2012★ 6 cited

Direct integrals of strongly irreducible operators

Chunlan Jiang, Rui Shi

Strongly irreducible operators can be considered as building blocks for bounded linear operators on complex separable Hilbert spaces. Many bounded linear operators can be written a…

math.FA2011

On The Uniqueness of The Strongly Irreducible Decompositions of Operators up to Similarity

Rui Shi

We give a generalization of the Jordan canonical form theorem for a class of bounded linear operators on complex separable Hilbert spaces in terms of direct integrals. Precisely, w…

math.FA2011★ 1 cited

On a generalization of the Jordan canonical form theorem on separable Hilbert spaces

Rui Shi

We prove a generalization of the Jordan canonical form theorem for a class of bounded linear operators on complex separable Hilbert spaces.