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Given a type I von Neumann algebra $M$ with a faithful normal semi-finite trace $\tau,$ let $S_0(M, \tau)$ be the algebra of all $\tau$-compact operators affiliated with $M.$ We give a complete description of all derivations on the algebra…

Operator Algebras · Mathematics 2008-07-29 S. Albeverio , Sh. A. Ayupov , K. K. Kudaybergenov , T. S. Kalandarov

This paper is concerned with derivations in algebras of (unbounded) operators affiliated with a von Neumann algebra $\mathcal{M}$. Let $\mathcal{% A}$ be one of the algebras of measurable operators, locally measurable operators or, $\tau…

Operator Algebras · Mathematics 2009-07-08 A. F. Ber , B. de Pagter , F. A. Sukochev

In this paper, the generalized Loop Heisenberg-Virasoro algebra is introduced. Firstly, we determine the derivations on the generalized Loop Heisenberg-Virasoro algebra. Then we show that all 2-local derivations are derivations.…

Rings and Algebras · Mathematics 2025-10-27 Qingyan Ren , Liming Tang

Let $\phi: A\to A$ be a (not necessarily linear, additive or continuous) map of a standard operator algebra. Suppose for any $a,b\in A$ there is an algebra automorphism $\theta_{a,b}$ of $ A$ such that \begin{align*} \phi(a)\phi(b) =…

Operator Algebras · Mathematics 2024-07-16 Liguang Wang , Ngai-Ching Wong

Given a von Neumann algebra $M$ denote by $S(M)$ and $LS(M)$ respectively the algebras of all measurable and locally measurable operators affiliated with $M.$ For a faithful normal semi-finite trace $\tau$ on $M$ let $S(M, \tau)$ (resp.…

Operator Algebras · Mathematics 2008-08-04 S. Albeverio , Sh. A. Ayupov , K. K. Kudaybergenov

In this paper, we prove that every invertible $2$-local or local automorphism of a simple generalized Witt algebra over any field of characteristic $0$ is an automorphism. In particular, every $2$-local or local automorphism of Witt…

Rings and Algebras · Mathematics 2020-04-01 Yang Chen , Kaiming Zhao , Yueqiang Zhao

This paper studies local derivations on the Schr{\"o}dinger algebra $\ms_n$ in $(n+1)$-dimensional space-time of Schr{\"o}dinger Lie groups for any integer $n$. The purpose of this work is to prove that every local derivation on $\ms_n$ is…

Rings and Algebras · Mathematics 2024-02-13 Alauadinov A. K. , Yusupov B. B

This paper is devoted to derivations on the algebra $S_0(M, \tau)$ of all $\tau$-compact operators affiliated with a von Neumann algebra $M$ and a faithful normal semi-finite trace $\tau.$ The main result asserts that every…

Operator Algebras · Mathematics 2013-09-10 Shavkat Ayupov , Karimbergen Kudaybergenov

We determine derived representation type of complete finitely generated local and two-point algebras over an algebraically closed field.

Representation Theory · Mathematics 2008-12-31 Viktor Bekkert , Yuriy Drozd , Vyacheslav Futorny

We prove that a finite von Neumann algebra ${\mathcal A}$ is semisimple if the algebra of affiliated operators ${\mathcal U}$ of ${\mathcal A}$ is semisimple. When ${\mathcal A}$ is not semisimple, we give the upper and lower bounds for the…

Rings and Algebras · Mathematics 2007-10-30 Lia Vas

It is established that every (not necessarily linear) 2-local $^*$-homomorphism from a von Neumann algebra into a C$^*$-algebra is linear and a $^*$-homomorphism. In the setting of (not necessarily linear) 2-local $^*$-homomorphism from a…

Operator Algebras · Mathematics 2014-05-01 María Burgos , Francisco J. Fernández-Polo , Jorge J. Garcés , Antonio M. Peralta

In this paper we show that every locally finite quasivariety of MV-algebras is finitely generated and finitely based. To see this result we study critical MV-algebras. We also give axiomatizations of some of these quasivarieties.

Logic · Mathematics 2014-05-30 Joan Gispert , Antoni Torrens

In the present paper we prove that every additive (not necessarily homogenous) local inner derivation on the algebra of matrices over an arbitrary field is an inner derivation, and every local inner derivation on the ring of matrices over a…

Rings and Algebras · Mathematics 2019-01-28 Sh. Ayupov , F. Arzikulov

In the present paper automorphisms, local and 2-local automorphisms of $n$-dimensional null-filiform and filiform associative algebras are studied. Namely, a common form of the matrix of automorphisms and local automorphisms of these…

Rings and Algebras · Mathematics 2023-05-24 F. N. Arzikulov , I. A. Karimjanov , S. M. Umrzaqov

We prove locality of superconformal algebras: every pluperfect superconformal algebra is spanned by coefficients of a finite family of mutually local distributions. We also introduce quasi-Poisson algebras and show that they can be used to…

Representation Theory · Mathematics 2020-06-08 Yuly Billig

R.V. Kadison defined the notion of local derivation on an algebra and proved that every continuous local derivation on a von Neumann algebra is a derivation (Kadison 1990). We provide the analogous result in the setting of Jordan triples.

Operator Algebras · Mathematics 2016-10-20 Michael Mackey

We prove Bismut-type formulae for the first and second derivatives of a Feynman-Kac semigroup on a complete Riemannian manifold. We derive local estimates and give bounds on the logarithmic derivatives of the integral kernel. Stationary…

Differential Geometry · Mathematics 2020-03-10 James Thompson

Let $\mathcal{H}$ be a separable Hilbert space and $\mathcal{L}_{0}\subset B(\mathcal{H})$ a complete reflexive lattice. Let $\mathscr{K}$ be the direct sum of $n_0$ copies of $\mathcal{H}$ ($n_{0}\in\mathbb{N}$ and $n_0\geq 2$) or the…

Operator Algebras · Mathematics 2025-01-08 Hongjie Chen , Liguang Wang , Zhujun Yang

We prove that every bounded local triple derivation on a unital C*-algebra is a triple derivation. A similar statement is established in the category of unital JB*-algebras.

Operator Algebras · Mathematics 2012-08-17 Maria Burgos , Francisco J. Fernández-Polo , Jorge J. Garcés , Antonio M. Peralta

We prove that every 2-local automorphism of the unitary group or the general linear group on a complex infinite-dimensional separable Hilbert space is an automorphism. Thus these types of transformations are completely determined by their…

Operator Algebras · Mathematics 2007-05-23 Lajos Molnar , Peter Semrl
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