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We classify all integrable complex structures on 6-dimensional Lie algebras of the form $\mathfrak{g}\times\mathfrak{g}$.

Differential Geometry · Mathematics 2018-03-09 Andrzej Czarnecki

We construct integrable and superintegrable Hamiltonian systems using the realizations of four dimensional real Lie algebras as a symmetry of the system with the phase space R4 and R6. Furthermore, we construct some integrable and…

Mathematical Physics · Physics 2014-05-27 J. Abedi-Fardad , A. Rezaei-Aghdam , Gh. Haghighatdoost

This work concerns how the three-dimensional polyhedral Mereon structure (the 120 polyhedron) is the precise projection from four-space of the 600-cell, an analogue in four-dimensional space of a regular solid. The 600-cell is made from 120…

Group Theory · Mathematics 2026-05-12 Robert W. Gray , Lynnclaire Dennis , Louis H. Kauffman

We find a new representation of the simple Lie algebra of type $E_7$ on the polynomial algebra in 27 variables, which gives a fractional representation of the corresponding Lie group on 27-dimensional space. Using this representation and…

Representation Theory · Mathematics 2012-01-27 Xiaoping Xu

Four $\ZZ_+$-bigraded complexes with the action of the exceptional infinite-dimensional Lie superalgebra E(3,6) are constructed. We show that all the images and cokernels and all but three kernels of the differentials are irreducible…

Mathematical Physics · Physics 2014-01-17 Victor G. Kac , Alexei Rudakov

We present the derivation of the 6-dimensional Eulerian Lie group of the form SO(3,C). We describe our derivation process, which involves the creation of a finite group by using permutation matrices, and the exponentiation of the adjoint…

General Mathematics · Mathematics 2018-03-20 Jason Glowney

Satake diagrams of the real forms $ \mathfrak{e}_{6,-26}$, $ \mathfrak{e}_{6,-14}$ and $ \mathfrak{e}_{6,2}$ are carefully developed. The first real form is constructed with an Albert algebra and the other ones by using the two paraoctonion…

Rings and Algebras · Mathematics 2014-12-05 Cristina Draper , Valerio Guido

In this paper we determine the moduli space, up to isometric automorphism, of left-invariant metrics on a $6$-dimensional Lie group $H$, such that its Lie algebra $\mathfrak{h}$ admits a complex structure and has first Betti number equal to…

Differential Geometry · Mathematics 2021-02-15 Silvio Reggiani , Francisco Vittone

This article is the third in the series. It is devoted the calculation of the structure constants for the complex simple Lie algebra of type E_6 and Chevalley commutator formulas.

Group Theory · Mathematics 2024-03-18 Anna I. Polovinkina , Sergey G. Kolesnikov

We show that any proper Lie groupoid admits a compatible (real) analytic structure.

Differential Geometry · Mathematics 2017-07-26 David Martínez Torres

A symplectic polarity of a building {\Delta} of type E6 is a polarity whose fixed point structure is a building of type F4 containing residues isomorphic to symplectic polar spaces (i.e., so-called split buildings of type F4). In this…

Combinatorics · Mathematics 2020-01-13 Anneleen De Schepper , N. S. Narasimha Sastry , Hendrik Van Maldeghem

In order to define the complex exceptional Lie groups $ {F_4}^C, {E_6}^C, {E_7}^C, {E_8}^C $ and these compact real forms $ F_4,E_6,E_7,E_8 $, we usually use the Cayley algebra $ \mathfrak{C} $. In the present article, we consider replacing…

Differential Geometry · Mathematics 2024-09-13 Toshikazu Miyashita

We classify all continuous degenerate irreducible modules over the exceptional linearly compact Lie superalgebra E(1, 6), and all finite degenerate irreducible modules over the exceptional Lie conformal superalgebra CK6, for which E(1, 6)…

Mathematical Physics · Physics 2015-05-30 Carina Boyallian , Victor G. Kac , José I. Liberati

We give a construction of the compact real form of the Lie algebra of type $E_6$, using the finite irreducible subgroup of shape $3^{3+3}:\mathrm{SL}_3(3)$, which is isomorphic to a maximal subgroup of the orthogonal group $\Omega_7(3)$. In…

Rings and Algebras · Mathematics 2012-08-21 Robert A. Wilson

In the building of a finite group of Lie type we consider the incidence relations defined by oppositeness of flags. Such a relation gives rise to a homomorphism of permutation modules (in the defining characteristic) whose image is a simple…

Group Theory · Mathematics 2020-01-30 Peter Sin

Given an orientable weakly self-dual manifold X of rank two, we build a geometric realization of the Lie algebra sl(6,C) as a naturally defined algebra L of endomorphisms of the space of differential forms of X. We provide an explicit…

Differential Geometry · Mathematics 2007-05-23 Giovanni Gaiffi , Michele Grassi

We construct Lie algebras of derivations (and identify their geometrical realization) whose Maurer-Cartan sets provide moduli spaces describing the classes of homotopy types of rational spaces sharing either the same homotopy Lie algebra,…

Algebraic Topology · Mathematics 2023-03-08 Yves Félix , Mario Fuentes , Aniceto Murillo

We determine the moduli space of metric 2-step nilpotent Lie algebras of dimension up to 6. This space is homeomorphic to a cone over a 4-dimensional contractible simplicial complex.

Differential Geometry · Mathematics 2007-05-23 Sergio Console , Anna Fino , Evangelia Samiou

Let $G$ be a simple algebraic group of type $E_6$ over an algebraically closed field of characteristic $p>0$. We determine the submodule structure of the Weyl modul es with highest weight $r\omega_1$ for $0\leq r\leq p-1$, where $\omega_1$…

Representation Theory · Mathematics 2020-01-30 Peter Sin

In this paper we classify all four dimensional real Lie bialgebras of symplectic type. The classical r- matrices for these Lie bialgebras and Poisson structures on all of the related four dimensional Poisson-Lie groups are also obtained.…

Mathematical Physics · Physics 2024-09-11 J. Abedi-Fardad , A. Rezaei-Aghdam , Gh. Haghighatdoost