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In this note, we developed several results concerning abelian von Neumann algebras, their spectrums, and their tensor products with other von Neumann algebras. In particular, we developed a theory connecting elements of the spectrum of…

Operator Algebras · Mathematics 2023-06-06 David Gao

The authors of this article intend to present some results obtained in the study of biderivations of complete Lie algebras. Firstly they present a matricial approach to do this, which was a useful and explanatory tool not only in the study…

Rings and Algebras · Mathematics 2023-08-01 Alfonso Di Bartolo , Gianmarco La Rosa

Let $\mathcal{M}$ be a separable von Neumann algebra with center $\mathcal{Z}(\mathcal{M})$. An operator $T$ in $\mathcal{M}$ is called irreducible if the von Neumann algebra $W^*(T)$ generated by $T$ has trivial relative commutant, i.e.,…

Operator Algebras · Mathematics 2025-12-04 Sukitha Adappa , Minghui Ma , Junhao Shen , Rui Shi , Shanshan Yang

Extended geometry provides a unified framework for double geometry, exceptional geometry, etc., i.e., for the geometrisations of the string theory and M-theory dualities. In this talk, we will explain the structure of gauge transformations…

High Energy Physics - Theory · Physics 2019-05-22 Martin Cederwall , Jakob Palmkvist

We review and develop the general properties of $L_\infty$ algebras focusing on the gauge structure of the associated field theories. Motivated by the $L_\infty$ homotopy Lie algebra of closed string field theory and the work of Roytenberg…

High Energy Physics - Theory · Physics 2017-04-26 Olaf Hohm , Barton Zwiebach

Let F be a field with characteristic two. We generalize the second trace form for central simple algebras with odd degree over F. We determine the second trace form and the Arf invariant and Clifford invariant for tensor products of central…

Number Theory · Mathematics 2007-05-23 A. C. de la Maza

In this paper, we demonstrate that several classes of functions, specifically n-multiplicative isomorphisms, derivations, elementary maps, and Jordan elementary maps on a class of algebras that includes Jordan algebras with idempotents,…

Rings and Algebras · Mathematics 2025-03-31 Daniel Eiti Nishida Kawai , Henrique Guzzo , Bruno Leonardo Macedo Ferreira

We undertake a comprehensive study of structural properties of graph products of von Neumann algebras equipped with faithful, normal states, as well as properties of the graph products relative to subalgebras coming from induced subgraphs.…

We develop the Lie theory of Lie-admissible algebras whose product is enriched with higher operations modeled on directed graphs with a view to apply it to the deformation theories controlled by this kind of Lie algebras. We produce…

Quantum Algebra · Mathematics 2025-10-10 Ricardo Campos , Bruno Vallette

The Brauer-Chen algebra is a generalization of the algebra of Brauer diagrams to arbitrary complex reflection groups, that admits a natural monodromic deformation. We determine the generic representation theory of the first non trivial…

Representation Theory · Mathematics 2019-09-04 Ivan Marin

In this work we will study the universal labeling algebra A(Gamma), a related algebra B(Gamma), and their behavior as invariants of layered graphs. We will introduce the notion of an upper vertex-like basis, which allows us to recover…

Rings and Algebras · Mathematics 2013-12-17 Susan Durst

In this paper, we prove that a biderivation of a finite dimensional complex simple Lie algebra without the restriction of skewsymmetric is inner. As an application, the biderivation of a general linear Lie algebra is presented. In…

Rings and Algebras · Mathematics 2016-12-20 Xiaomin Tang

The derived bracket of a Maurer-Cartan element in a differential graded Lie algebra (DGLA) is well-known to define a differential graded Leibniz algebra. It is also well-known that a Lie infinity morphism between DGLAs maps a Maurer-Cartan…

Differential Geometry · Mathematics 2018-07-24 Camille Laurent-Gengoux , Mohsen Masmoudi

We study regular inclusions of finite-dimensional von Neumann algebras from a matrix-theoretic perspective. To this end, we introduce a new combinatorial invariant of an inclusion, called the normalizer matrix, which encodes the structure…

Operator Algebras · Mathematics 2026-02-18 Keshab Chandra Bakshi , Silambarasan C

Let $L$ and $M$ be closed, connected, smooth manifolds and let $L \hookrightarrow T^*M$ be an exact Lagrangian embedding. The induced map $L \to M$ is known by earlier work to be a homotopy equivalence. We show that the associated normal…

Symplectic Geometry · Mathematics 2025-10-23 Mohammed Abouzaid , Daniel Álvarez-Gavela , Sylvain Courte , Thomas Kragh

For a countably decomposable finite von Neumann algebra $\mathscr{R}$, we show that any choice of a faithful normal tracial state on $\mathscr{R}$ engenders the same measure topology on $\mathscr{R}$ in the sense of Nelson (J. Func. Anal.,…

Operator Algebras · Mathematics 2022-12-16 Soumyashant Nayak

We define a generalized form of $L_\infty$-algebras called $E_2L_\infty$-algebras. As we show, these provide the natural algebraic framework for generalized geometry and the symmetries of double field theory as well as the gauge algebras…

High Energy Physics - Theory · Physics 2025-09-23 Leron Borsten , Hyungrok Kim , Christian Saemann

The main object of this paper is to study the generalized von mangoldt function using the L-additive function, which can help us give many result about the classical arithmetic function.

General Mathematics · Mathematics 2023-01-25 Es-said En-naoui

We study the equivalence relation $R_N$ generated by the (non-free) action of the generalized Thompson group $F_N$ on the unit interval. We show that this relation is a standard, quasipreserving ergodic equivalence relation. Using results…

Operator Algebras · Mathematics 2007-05-23 Dorin Dutkay , Gabriel Picioroaga

In this paper we study derivations in subalgebras of $L_{0}^{wo}(\nu ;% \mathcal{L}(X)) $, the algebra of all weak operator measurable funtions $f:S\to \mathcal{L}(X) $, where $% \mathcal{L}(X) $ is the Banach algebra of all bounded linear…

Operator Algebras · Mathematics 2008-11-07 A. F. Ber , B. de Pagter , F. A. Sukochev
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