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We generalize several important results from the perturbation theory of linear operators to the setting of semisimple orthogonal symmetric Lie algebras. These Lie algebras provide a unifying framework for various notions of matrix…

Representation Theory · Mathematics 2023-07-04 Emanuel Malvetti , Gunther Dirr , Frederik vom Ende , Thomas Schulte-Herbrüggen

We survey the theory of totally symmetric sets, with applications to homomorphisms of symmetric groups, braid groups, linear groups, and mapping class groups.

Group Theory · Mathematics 2024-01-26 Noah Caplinger , Dan Margalit

We give some properties of cosymplectic Lie algebras, we show, in particular, that they support a left symmetric product. We also give some constructions of cosymplectic Lie algebras, as well as a classification in three and…

Symplectic Geometry · Mathematics 2022-06-10 S. El bourkadi , M. W. Mansouri

For a given abelian group G, we classify the isomorphism classes of G-gradings on the simple restricted Lie algebras of types W(m;1) and S(m;1) (m>=2), in terms of numerical and group-theoretical invariants. Our main tool is automorphism…

Rings and Algebras · Mathematics 2012-12-04 Yuri Bahturin , Mikhail Kochetov

We obtain structure results for locally conformally symplectic Lie algebras. We classify locally conformally symplectic structures on four-dimensional Lie algebras and construct locally conformally symplectic structures on compact quotients…

Differential Geometry · Mathematics 2023-06-13 Daniele Angella , Giovanni Bazzoni , Maurizio Parton

Given a positive definite even lattice and a commutative ring, there is a standard construction of a lattice vertex algebra over the commutative ring, and it admits a natural grading by non-negative integers. We describe the groups of…

Quantum Algebra · Mathematics 2026-02-18 Scott Carnahan , Hayate Kobayashi

We give a complete classification (up to isomorphism) of Lie conformal algebras which are free of rank two as $\C[\partial]$-modules, and determine their automorphism groups.

Representation Theory · Mathematics 2019-07-12 Rekha Biswal , Abdelkarim Chakhar , Xiao He

In this paper we study the categories of braided categorical associative algebras and braided crossed modules of associative algebras and we relate these structures with the categories of braided categorical Lie algebras and braided crossed…

Category Theory · Mathematics 2017-11-27 Alejandro Fernández-Fariña , Manuel Ladra

In the present paper we present a classification of Lie bialgebra structures on Lie algebras of type g[[u]] and g[u], where g is a simple finite dimensional Lie algebra.

Quantum Algebra · Mathematics 2010-09-08 F. Montaner , A. Stolin , E. Zelmanov

We study $\mathbb{Z}_2$-graded identities of simple Lie superalgebras over a field of characteristic zero. We prove the existence of the graded PI-exponent for such algebras.

Rings and Algebras · Mathematics 2019-09-25 Dušan D. Repovš , Mikhail V. Zaicev

We exhibit a natural Lie algebra structure on the graded space of cyclic coinvariants of a symplectic vector space.

Rings and Algebras · Mathematics 2007-05-23 Eugene Kushnirsky , Michael Larsen

In this paper we describe the the category of Lie algebras of group algebras and the category of Plesken Lie algebras and explore the categorical relations between them. Further we provide the examples of the Lie algebra of the group…

Category Theory · Mathematics 2021-07-27 P G Romeo , Arjun S N

In this paper we study gradings on simple Lie algebras arising from nilpotent elements. Specifically, we investigate abelian subalgebras which are degree 1 homogeneous with respect to these gradings. We show that for each odd nilpotent…

Representation Theory · Mathematics 2020-05-19 A. G. Elashvili , M. Jibladze , V. G. Kac

Pursuing a generalization of group symmetries of modular categories to category symmetries in topological phases of matter, we study linear Hopf monads. The main goal is a generalization of extension and gauging group symmetries to category…

Quantum Algebra · Mathematics 2019-11-05 Shawn X. Cui , Modjtaba Shokrian Zini , Zhenghan Wang

Pure braid groups and pure mapping class groups of a punctured sphere have many features in common. In the paper the graded Lie algebra of the descending central series of the pure mapping class of a sphere is studied. A simple presentation…

Algebraic Topology · Mathematics 2012-02-21 R. Karoui , V. V. Vershinin

A complete classification of two-dimensional algebras over algebraically closed fields is provided

Rings and Algebras · Mathematics 2018-12-04 H. Ahmed , U. Bekbaev , I. Rakhimov

The notion of a Lie conformal superalgebra encodes an axiomatic descrption of singular parts of the operator product expansions of chiral fields in conformal field theory. In the paper we give a detailed proof of the classification of all…

Mathematical Physics · Physics 2014-01-17 Davide Fattori , Victor G. Kac

We describe automorphisms and derivations of several important associative and Lie algebras of infinite matrices over a field.

Rings and Algebras · Mathematics 2021-08-12 Oksana Bezushchak

A set grading on the split simple Lie algebra of type $D_{13}$, that cannot be realized as a group-grading, is constructed by splitting the set of positive roots into a disjoint union of pairs of orthogonal roots, following a pattern…

Rings and Algebras · Mathematics 2022-05-16 Alberto Elduque

We study the class of idempotent-generated pseudo-composition algebras, which is a subclass of the family of axial algebras. More specifically, we utilise the group-algebra correspondence, natural to the axial framework in order to study…

Group Theory · Mathematics 2024-05-28 Vsevolod A. Afanasev
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