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The present paper presents a survey of some recent results devoted to derivations, local derivations and 2-local derivations on various algebras of measurable operators affiliated with von Neumann algebras. We give a complete description of…

Operator Algebras · Mathematics 2016-02-22 Shavkat Ayupov , Karimbergen Kudaybergenov

The paper is devoted to 2-local derivations on the algebra $LS(M)$ of all locally measurable operators affiliated with a type I$_\infty$ von Neumann algebra $M.$ We prove that every 2-local derivation on $LS(M)$ is a derivation.

Operator Algebras · Mathematics 2012-09-25 Sh. A. Ayupov , K. K. Kudaybergenov , A. K. Alauadinov

In the present paper we prove that every 2-local derivation on a von Neumann algebra of type I is a derivation.

Operator Algebras · Mathematics 2014-04-23 Shavkat Ayupov , Farkhad Arzikulov

In the present paper 2-local derivations on various algebras of infinite dimensional matrix-valued functions on a compact are considered. It is proved that every 2-local derivation on such algebra is a derivation. Also we explain that the…

Operator Algebras · Mathematics 2015-09-21 Shavkat Ayupov , Farhodjon Arzikulov

Let \(\mathcal{A}\) be a unital Banach algebra such that any Jordan derivation from \(\mathcal{A}\) into any \(\mathcal{A}\)-bimodule \(\mathcal{M}\) is a derivation. We prove that any 2-local derivation from the algebra $M_n(\mathcal{A})$…

Operator Algebras · Mathematics 2017-02-27 Shavkat Ayupov , Karimbergen Kudaybergenov , Amir Alauadinov

In the present paper we prove that every 2-local derivation on a semi-finite von Neumann algebra is a derivation.

Operator Algebras · Mathematics 2014-09-22 Shavkat Ayupov , Farkhad Arzikulov

We characterize derivations and 2-local derivations from $M_{n}(\mathcal{A})$ into $M_{n}(\mathcal{M})$, $n \ge 2$, where $\mathcal{A}$ is a unital algebra over $\mathbb{C}$ and $\mathcal{M}$ is a unital $\mathcal{A}$-bimodule. We show that…

Rings and Algebras · Mathematics 2018-01-29 Wenbo Huang , Jiankui Li , Wenhua Qian

In the present paper we prove that every 2-local inner derivation on the Lie ring of skew-adjoint matrices over a commutative $*$-ring is an inner derivation. We also apply our technique to various Lie algebras of infinite-dimensional…

Rings and Algebras · Mathematics 2022-04-08 Shavkat Ayupov , Farhodjon Arzikulov , Sardorbek Umrzaqov

In the present paper we prove that every 2-local inner derivation on the Lie ring of skew-symmetric matrices over a commutative ring is an inner derivation. We also apply our technique to various Lie algebras of infinite dimensional…

Rings and Algebras · Mathematics 2018-03-19 Shavkat Ayupov , Farhodjon Arzikulov

In the present paper we prove that every 2-local inner derivation on the Jordan ring of self-adjoint matrices over a commutative involutive ring is a derivation. We also apply our technique to various Jordan algebras of infinite dimensional…

Rings and Algebras · Mathematics 2026-05-04 Sh. A. Ayupov , F. N. Arzikulov , N. M. Umrzaqov , O. O. Nuriddinov

This paper is devoted to the study of local and 2-local derivations of nullfiliform, filiform and naturally graded quasi-filiform associative algebras. We prove that these algebras as a rule admit local derivations which are not…

Rings and Algebras · Mathematics 2023-06-27 K. K. Abdurasulov , Sh. A. Ayupov , B. B. Yusupov

In the present paper we prove that every 2-local inner derivation on the matrix ring over a commutative ring is an inner derivation and every derivation on an associative ring has an extension to a derivation on the matrix ring over this…

Rings and Algebras · Mathematics 2017-05-30 Shavkat Ayupov , Farhodjon Arzikulov

In the present paper it is proved that every inner 2-local derivation on the matrix ring $M_n(\Re)$ of $n\times n$ matrices over a commutative associative ring $\Re$ is an inner derivation. Also, it is proved that, every derivation on an…

Rings and Algebras · Mathematics 2015-09-29 Shavkat Ayupov , Farhodjon Arzikulov

The paper is devoted to so-called local and 2-local derivations on the noncommutative Arens algebra $L^\omega(M, \tau)$ associated with a von Neumann algebra $M$ and a faithful normal semi-finite trace $\tau.$ We prove that every 2-local…

Operator Algebras · Mathematics 2011-10-10 Sh. A. Ayupov , K. K. Kudaybergenov , B. O. Nurjanov , A. K. Alauatdinov

The paper is devoted to 2-local derivations on matrix algebras over unital semi-prime Banach algebras. For a unital semi-prime Banach algebra $\mathcal{A}$ with the inner derivation property we prove that any 2-local derivation on the…

Operator Algebras · Mathematics 2014-11-11 Shavkat Ayupov , Karimbergen Kudaybergenov

The paper is devoted to the description of $2$-local derivations on von Neumann algebras. Earlier it was proved that every $2$-local derivation on a semi-finite von Neumann algebra is a derivation. In this paper, using the analogue of…

Operator Algebras · Mathematics 2014-10-07 Shavkat Ayupov , Karimbergen Kudaybergenov

The paper is devoted to local derivations on the algebra $S(\mathcal{M},\tau)$ of $\tau$-measurable operators affiliated with a von Neumann algebra $\mathcal{M}$ and a faithful normal semi-finite trace $\tau.$ We prove that every local…

Operator Algebras · Mathematics 2014-01-29 S. Albeverio , Sh. A. Ayupov , K. K. Kudaybergenov , B. O. Nurjanov

The present paper is devoted to study 2-local derivations on W-algebra $W(2,2)$ which is an infinite-dimensional Lie algebras with some out derivations. We prove that all 2-local derivations on the W-algebra $W(2,2)$ are derivation. We also…

Rings and Algebras · Mathematics 2020-03-13 Xiaomin Tang

We prove that every {\rm(}not necessarily linear nor continuous{\rm)} 2-local triple derivation on a von Neumann algebra $M$ is a triple derivation, equivalently, the set Der$_{t} (M)$, of all triple derivations on $M,$ is algebraically…

Operator Algebras · Mathematics 2015-12-11 Karimbergen Kudaybergenov , Timur Oikhberg , Antonio M. Peralta , Bernard Russo

The present paper is devoted to study 2-local derivations on infinite-dimensional Lie algebras over a field of characteristic zero. We prove that all 2-local derivations on the Witt algebra as well as on the positive Witt algebra are…

Rings and Algebras · Mathematics 2019-01-15 Shavkat Ayupov , Baxtiyor Yusupov
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