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We determine the equivariant real structures on nilpotent orbits and the normalizations of their closures for the adjoint action of a complex semisimple algebraic group on its Lie algebra.

Algebraic Geometry · Mathematics 2022-05-31 Michael Bulois , Lucy Moser-Jauslin , Ronan Terpereau

We give the classification of $5$- and $6$-dimensional complex one-generated nilpotent assosymmetric algebras.

Rings and Algebras · Mathematics 2021-01-20 Ivan Kaygorodov , Farukh Mashurov

We study bi-Lagrangian structures (a symplectic form with a pair of complementary Lagrangian foliations, also known as para-K\"ahler or K\"unneth structures) on nilmanifolds of dimension less than or equal to 6. In particular, building on…

Symplectic Geometry · Mathematics 2019-03-01 M. J. D. Hamilton

Every metric symplectic Lie algebra has the structure of a quadratic extension. We give a standard model and describe the equivalence classes on the level of corresponding quadratic cohomology sets. Finally, we give a scheme to classify the…

Differential Geometry · Mathematics 2016-09-13 Mathias Fischer

A study is made of real Lie algebras admitting a hypersymplectic structure, and we provide a method to construct such hypersymplectic Lie algebras. We use this method in order to obtain the classification of all hypersymplectic structures…

Differential Geometry · Mathematics 2007-05-23 Adrian Andrada

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 are interested in solvable complete Lie algebras, over the field $\K=\R$ or $\mathbb{C}$, which admit a symplectic structure. Specifically, important classes are studied, and a description of complete Lie Algebra with the…

Differential Geometry · Mathematics 2024-07-01 M. Benyoussef , M. W. Mansouri , SM. Sbai

In this paper, we establish the theory of nilpotent hypergroups and study some properties of nilpotent hypergroups and provided some structural characterizations of nilpotent hypergroups.

Group Theory · Mathematics 2023-10-31 Chi Zhang , Wenbin Guo

The connections between Euler's equations on central extensions of Lie algebras and Euler's equations on the original, extended algebras are described. A special infinite sequence of central extensions of nilpotent Lie algebras constructed…

Differential Geometry · Mathematics 2024-12-03 I. A. Taimanov

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

Let $\0$ be a nilpotent orbit in a semisimple complex Lie algebra $\g$. Denote by $G$ the simply connected Lie group with Lie algebra $\g$. For a $G$-homogeneous covering $M \to \0$, let $X$ be the normalization of $\bar{\0}$ in the…

Algebraic Geometry · Mathematics 2007-05-23 Baohua Fu

We study the algebraic constraints on the structure of nilpotent Lie algebra $\mathbb{g}$, which arise because of the presence of an integrable complex structure $J$. Particular attention is paid to non-abelian complex structures.…

Rings and Algebras · Mathematics 2014-12-02 Dmitry Millionschikov

This article provides a complete description of the differential Gerstenhaber algebras of all nilpotent complex structures on any real six-dimensional nilpotent algebra. As an application, we classify all pseudo-K\"ahlerian complex…

Algebraic Geometry · Mathematics 2007-10-20 Richard Cleyton , Yat Sun Poon

In this article, we introduce the concept of nilpotent graph of a finite commutative ring. The set of all non nilpotent elements of a ring is taken as the vertex set and two vertices are adjacent if and only if their sum is nilpotent. We…

Rings and Algebras · Mathematics 2018-04-25 Dhiren Kumar Basnet , Ajay Sharma , Rahul Dutta

Let $k$ be a field of any characteristic, $V$ a finite-dimensional vector space over $k$, and $S^d(V^*)$ be the $d$-th symmetric power of the dual space $V^*$. Given a linear map $\varphi$ on $V$ and an eigenvector $w$ of $\varphi$, we…

Rings and Algebras · Mathematics 2025-01-28 Yin Chen

In this paper, we classify eight-dimensional non-solvable Lie algebras that support a symplectic structure. As well as a complete classification is given, up to symplectomorphism, of eight-dimensional symplectic non-solvable Lie algebras.

Symplectic Geometry · Mathematics 2023-05-23 T. Aït Aissa , M. W. Mansouri

Supernilpotence is a generalization of nilpotence using a recently developed theory of higher-arity commutators for universal algebras. Many important structural properties have been shown to be associated with supernilpotence, and the…

Rings and Algebras · Mathematics 2018-08-17 Matthew Moore , Andrew Moorhead

We introduce a novel concept Frattinian nilpotent Lie algebra. Along with some examples, we show that every Frattinian nilpotent Lie algebra has a central decomposition of its ideals.

Rings and Algebras · Mathematics 2022-08-17 Mehri KianMehr , Farshid Saeedi

In this paper, we determine the structure of the nilpotent multipliers of all pairs $(G,N)$ of finitely generated abelian groups where $N$ admits a complement in $G$. Moreover, some inequalities for the nilpotent multipliers of pairs of…

Group Theory · Mathematics 2021-04-02 Azam Hokmabadi , Fahimeh Mohammadzadeh , Behrooz Mashayekhy

Let $\mathfrak{sp}_{2n}(\mathbb {K})$ be the symplectic Lie algebra over an algebraically closed field of characteristic zero. We prove that for any nonzero nilpotent element $X \in \mathfrak{sp}_{2n}(\mathbb {K})$ there exists a nilpotent…

Rings and Algebras · Mathematics 2019-08-13 Alisa Chistopolskaya