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We give an arithmetic criterion which is sufficient to imply the discreteness of various two-generator subgroups of $PSL(2,{\bold C})$. We then examine certain two-generator groups which arise as extremals in various geometric problems in…

Differential Geometry · Mathematics 2016-09-06 F. W. Gehring , C. Maclachlan , G. J. Martin , A. W. Reid

In this article, we first give a short introduction to conformal algebras. Then we present three families of simple conformal algebras finite growth generated by simple Jordan algebras of types A, B, C.

Quantum Algebra · Mathematics 2007-05-23 Xiaoping Xu

The Abelian semigroup expansion is a powerful and simple method to derive new Lie algebras from a given one. Recently it was shown that the $S$-expansion of $\mathfrak{so}\left( 3,2\right) $ leads us to the Maxwell algebra $\mathcal{M}$. In…

High Energy Physics - Theory · Physics 2014-08-14 P. K. Concha , E. K. Rodríguez

We extend the work of Cremona, Fisher and Stoll on minimising genus one curves of degrees 2,3,4,5, to some of the other representations associated to genus one curves, as studied by Bhargava and Ho. Specifically we describe algorithms for…

Number Theory · Mathematics 2017-03-07 Tom Fisher , Lazar Radičević

The orthogonal group acts on the space of several $n\times n$ matrices by simultaneous conjugation. For an infinite field of characteristic different from two, relations between generators for the algebra of invariants are described. As an…

Representation Theory · Mathematics 2010-11-29 A. A. Lopatin

In this paper we study the minimal number of generators for simple Lie algebras in characteristic 0 or p > 3. We show that any such algebra can be generated by 2 elements. We also examine the 'one and a half generation' property, i.e. when…

Representation Theory · Mathematics 2008-07-14 Jean-Marie Bois

Bisch and Jones proposed the classification of planar algebras by simple generators and relations. In this paper, we study the generating problem for a family of group-subgroup subfactors associated with the Kneser graphs, namely, to…

Operator Algebras · Mathematics 2019-12-06 Yunxiang Ren

We present a theoretical framework that integrates Majorana's infinite-component relativistic equation within the algebraic structure of paraparticles through the minimal nontrivial $\mathbb{Z}_2 \times \mathbb{Z}_2$--graded Lie algebras…

Quantum Physics · Physics 2025-05-30 Fabrizio Tamburini , Nicolò Leone , Matteo Sanna , Roberto Siagri

The algebraic and geometric classification of all complex $3$-dimensional transposed Poisson algebras is obtained. Also, we discuss strong special $3$-dimensional transposed Poisson algebras.

Rings and Algebras · Mathematics 2023-11-02 Patrícia Damas Beites , Amir Fernández Ouaridi , Ivan Kaygorodov

The trace algebra C(n,d) over a field of characteristic 0 is generated by all traces of products of d generic nxn matrices, n,d>1. Minimal sets of generators of C(n,d) are known for n=2 and n=3 for any d as well as for n=4 and n=5 and d=2.…

Rings and Algebras · Mathematics 2007-05-23 Francesca Benanti , Vesselin Drensky

We classify all two-dimensional simple algebras (which may be non-associative) over an algebraically closed field. For each two-dimensional algebra $\mathcal{A}$, we describe a minimal (with respect to inclusion) generating set for the…

Rings and Algebras · Mathematics 2025-04-21 María Alejandra Alvarez , Artem Lopatin

We suggest a mathematical definition of the notion of master integrals and present a brief review of algorithmic methods to solve reduction problems for Feynman integrals based on integration by parts relations. In particular, we discuss a…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. V. Smirnov , V. A. Smirnov

Let $\Gamma$ be a generic subgroup of the multiplicative group $\mathbb{C}^*$ of nonzero complex numbers. We define a class of Lie algebras associated to $\Gamma$, called twisted $\Gamma$-Lie algebras, which is a natural generalization of…

Representation Theory · Mathematics 2013-10-21 Fulin Chen , Shaobin Tan , Qing Wang

We start with definitions of the general notions of the theory of $\Bbb Z_{2}$-graded algebras. Then we consider theory of inductive families of $\Bbb Z_{2}$-graded semisimple finite-dimensional algebras and its representations in the…

Representation Theory · Mathematics 2008-01-17 A. M. Vershik , A. N. Sergeev

In $26+1$ space-time dimensions, we introduce a gravity theory whose massless spectrum can be acted upon by the Monster group when reduced to $25+1$ dimensions. This theory generalizes M-theory in many respects and we name it Monstrous…

High Energy Physics - Theory · Physics 2023-02-17 Alessio Marrani , Michael Rios , David Chester

The tridiagonal algebra is defined by two generators and two relations, called the tridiagonal relations. Special cases of the tridiagonal algebra include the $q$-Onsager algebra, the positive part of the $q$-deformed enveloping algebra…

Combinatorics · Mathematics 2026-03-25 Paul Terwilliger

We introduce Z_3-graded objects which are the generalization of the more familiar Z_2-graded objects that are used in supersymmetric theories and in many models of non-commutative geometry. First, we introduce the Z_3-graded Grassmann…

High Energy Physics - Theory · Physics 2009-10-30 Bertrand Le Roy

A very interesting problem in the classical theory of minimal surfaces consists of the classification of such surfaces under some geometrical and topological constraints. In this short paper, we give a brief summary of the known…

Differential Geometry · Mathematics 2007-05-23 M. Magdalena Rodriguez

Gromov (2003) constructed finitely generated groups whose Cayley graphs contain all graphs from a given infinite sequence of expander graphs of unbounded girth and bounded diameter-to-girth ratio. These so-called Gromov monster groups…

Group Theory · Mathematics 2023-12-14 Louis Esperet , Ugo Giocanti

Recently V.H.L\'opez Sol\'is and I.Shestakov solved an old problem by N.Jacobson on describing of unital alternative algebras containing the $2\times 2$ matrix algebra $M_2$ as a unital subalgebra. Here we give another description of…

Rings and Algebras · Mathematics 2022-12-05 Alexandre Grishkov , Ivan Shestakov