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We introduce the notion of maximal orders over quaternion algebras with orthogonal involution and give a classification over local fields, and a partial classification over algebraic number fields.

Number Theory · Mathematics 2017-05-30 Arseniy Sheydvasser

We give a classification of semisimple and separable algebras in a multi-fusion category over an arbitrary field in analogy to Wedderben-Artin theorem in classical algebras. It turns out that, if the multi-fusion category admits a…

Quantum Algebra · Mathematics 2019-11-22 Liang Kong , Hao Zheng

The author introduces the notion of a quantum form of an algebraic torus. In the case of diagonal algebraic torus we get the algebra of Laurent twisted polynomials. Quantum algebraic torus can be characterized in terms of exact sequences.…

Quantum Algebra · Mathematics 2007-05-23 Alexander N Panov

A formulation of the Maxwell equations in terms of the split octonions is presented.

Mathematical Physics · Physics 2009-06-12 Pawel Nurowski

We consider Clifford algebras over the field of real or complex numbers as a quotient algebra without fixed basis. We present classification of Clifford algebra elements based on the notion of quaternion type. This classification allows us…

Mathematical Physics · Physics 2011-09-13 D. S. Shirokov

We investigate some aspects of bounding, splitting, and almost disjointness. In particular, we investigate the relationship between the bounding number, the closed almost disjointness number, splitting number, and the existence of certain…

Logic · Mathematics 2012-11-26 Jörg Brendle , Dilip Raghavan

This paper is mainly devoted to a structure study of Hom-alternative algebras . Equivalent conditions for Hom-alternative algebras being solvable, simple and semi-simple are displayed. Moreover some results about Hom-alternative bimodule…

Rings and Algebras · Mathematics 2019-08-26 Sylvain Attan

We give some examples of, and raise some questions on, extensions of semisimple Hopf algebras.

Quantum Algebra · Mathematics 2015-03-26 Nicolás Andruskiewitsch , Monique Müller

We introduce the class of split regular Hom-Leibniz algebras as the natural generalization of split Leibniz algebras and split regular Hom-Lie algebras. By developing techniques of connections of roots for this kind of algebras, we show…

Rings and Algebras · Mathematics 2018-02-23 Yan Cao , Liangyun Chen

In this paper, dual complex Pell numbers and quaternions are defined. Also, some algebraic properties of dual-complex Pell numbers and quaternions which are connected with dual complex numbers and Pell numbers are investigated. Furthermore,…

Number Theory · Mathematics 2018-10-15 Fügen Torunbalcı Aydın

Important subalgebras of a Lie algebra of an algebraic group are its toral subalgebras, or equivalently (over fields of characteristic 0) its Cartan subalgebras. Of great importance among these are ones that are split: their action on the…

Rings and Algebras · Mathematics 2012-04-25 Dan Roozemond

We study well-rounded ideal lattices from totally definite quaternion algebras. We prove existence and classification results, and illustrate our methods with examples.

Rings and Algebras · Mathematics 2025-12-04 Yuan Xiang Chew , Frédérique Oggier

The split quartic Cayley algebra is a structurable algebra which has been used to give constructions of Lie algebras of type D4. Here, we calculate its group of automorphisms, its algebra of derivations and its gradings.

Rings and Algebras · Mathematics 2023-02-07 Victor Blasco , Alberto Daza-Garcia

We argue that once octonions are formulated as soft Lie algebras, they may be safely used and the non-associativity can be overcame. The necessary points are: (a) Fixing the direction of action by introducing the \delta operator. (b)…

High Energy Physics - Theory · Physics 2007-05-23 Khaled Abdel-Khalek

In this expository article, we give a self-contained introduction to the wonderfully well-behaved class of pseudocompact algebras, focusing on the foundational classes of semisimple and separable algebras. We give characterizations of such…

Rings and Algebras · Mathematics 2025-01-20 Kostiantyn Iusenko , John MacQuarrie

In this paper we find a Clifford algebra associated to generalized Fibonacci quaternions. In this way, we provide a nice algorithm to obtain a division quaternion algebra starting from a quaternion non-division algebra and vice-versa.

Rings and Algebras · Mathematics 2014-04-08 Cristina Flaut

We introduce the notion of quadri-algebras. These are associative algebras for which the multiplication can be decomposed as the sum of four operations in a certain coherent manner. We present several examples of quadri-algebras: the…

Quantum Algebra · Mathematics 2007-05-23 Marcelo Aguiar , Jean-Louis Loday

Over an algebraically closed field, we describe the affine varieties of solutions to the linear equations $a(xb)=c$ and $a(bx)=c$ over the split-octonions. We also determine the dimensions of the solution sets of arbitrary linear monomial…

Rings and Algebras · Mathematics 2025-11-26 Artem Lopatin , Alexandr N. Zubkov

Following the work of the first and last authors [2], we further analyze the structure of a zero set of a left ideal in the ring of central polynomials over the quaternion algebra H. We describe the "algebraic hull" of a point in H^n and…

Rings and Algebras · Mathematics 2025-01-14 Gil Alon , Adam Chapman , Elad Paran

We determine endomorphism algebras of abelian surfaces with quaternion multiplication.

Number Theory · Mathematics 2013-10-08 Chia-Fu Yu