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Orbifold equivalence is a notion of symmetry that does not rely on group actions. Among other applications, it leads to surprising connections between hitherto unrelated singularities. While the concept can be defined in a very general…

Quantum Algebra · Mathematics 2017-08-29 Andreas Recknagel , Paul Weinreb

We show that a map between projection lattices of semi-finite von Neumann algebras can be extended to a Jordan $*$-homomorphism between the von Neumann algebras if this map is defined in terms of the support projections of images (under the…

Operator Algebras · Mathematics 2018-11-12 Pierre de Jager , Jurie Conradie

Universal algebraic geometry allows considering of geometric properties of every universal algebra. When two algebras have same algebraic geometry? We must consider the categories of algebraic closed sets of these algebras to answer this…

Category Theory · Mathematics 2026-02-03 A. Tsurkov

Let $S(H)$ be the set of all self-adjoint bonded linear operators on $H$ and $\mathcal{V} \subset S(H)$ a subset that is pertinent in mathematical foundations of quantum mechanics. A symmetry is a bijective map $\phi :\mathcal{V} \to…

Functional Analysis · Mathematics 2025-07-31 Peter Semrl

We define the notion of dextral symmetric algebras (not necessarily associative), motivated by the idea of symmetric rings. We derive a complete classification of dextral symmetric algebras of Leavitt path algebras, and right Leibniz…

Rings and Algebras · Mathematics 2024-06-12 Dimpy M. Dutta , Shanborlang Bynnud

We study graded symmetric algebras, which are the symmetric monoids in the monoidal category of vector spaces graded by a group. We show that a finite dimensional graded semisimple algebra is graded symmetric. The center of a symmetric…

Rings and Algebras · Mathematics 2017-07-24 Sorin Dascalescu , Constantin Nastasescu , Laura Nastasescu

We consider an involutive automorphism of the conformal algebra and the resulting symmetric space. We display a new action of the conformal group which gives rise to this space. The space has an intrinsic symplectic structure, a…

High Energy Physics - Theory · Physics 2007-05-23 Andre Wehner

We describe $\sigma$-matching, interchangeable and, as a consequence, totally compatible products on some classes of associative algebras, including unital algebras, the semigroup algebras of rectangular bands, algebras with enough…

Rings and Algebras · Mathematics 2025-10-22 Mykola Khrypchenko

In this paper we define infinite-dimensional algebra and its representation, whose basis is naturally identified with semi-infinite configurations of the square ladder model. We also extrapolate the ideas for the cyclic 3-leg triangular…

Combinatorics · Mathematics 2022-06-14 Valerii Sopin

We show that the symmetrization of a brace algebra structure yields the structure of a symmetric brace algebra.

Quantum Algebra · Mathematics 2007-05-23 Marilyn Daily , Tom Lada

Lattice theoretical generalizations of some classical linear algebra results are formulated. A vector space is replaced by its subspace lattice and a linear map is replaced by the induced lattice map. This map is a complete join…

Rings and Algebras · Mathematics 2007-05-23 Jeno Szigeti

The fundamental symmetries in gravity and gauge theories, formulated using differential forms, are gauge transformations and diffeomorphisms. These symmetries act in distinct ways on different dynamical fields. Yet, the commutator of these…

General Relativity and Quantum Cosmology · Physics 2025-07-01 O. Ramírez , Y. Bonder

We define and investigate a geometric object, called an associative geometry, corresponding to an associative algebra (and, more generally, to an associative pair). Associative geometries combine aspects of Lie groups and of generalized…

Rings and Algebras · Mathematics 2010-05-19 Wolfgang Bertram , Michael Kinyon

We define and investigate a geometric object, called an associative geometry, corresponding to an associative algebra (and, more generally, to an associative pair). Associative geometries combine aspects of Lie groups and of generalized…

Rings and Algebras · Mathematics 2010-05-31 Wolfgang Bertram , Michael Kinyon

A basic problem for any class of nonassociative algebras is to determine the polynomial identities satisfied by the symmetrization and the skew-symmetrization of the original product. We consider the symmetrization of the product in the…

Rings and Algebras · Mathematics 2025-08-01 Murray R. Bremner

We show that any adjoint absolutely simple linear algebraic group over a field of characteristic zero is the automorphism group of some projector on a central simple algebra. Projective homogeneous varieties can be described in these terms;…

Group Theory · Mathematics 2020-04-20 Viktor Petrov , Andrei Semenov

A totally symmetric set is a finite subset of a group for which any permutation of the elements can be realized by conjugation in the ambient group. Such sets are rigid under homomorphisms, and so exert a great deal of control over the…

Group Theory · Mathematics 2022-04-27 Noah Caplinger , Nick Salter

This paper introduces a SAT-based technique that calculates a compact and complete symmetry-break for finite model finding, with the focus on structures with a single binary operation (magmas). Classes of algebraic structures are typically…

Logic in Computer Science · Computer Science 2025-02-17 Marek Dančo , Mikoláš Janota , Michael Codish , João Jorge Araújo

We introduce "synchronous algebras", an algebraic structure tailored to recognize automatic relations (aka. synchronous relations, or regular relations). They are the equivalent of monoids for regular languages, however they conceptually…

Formal Languages and Automata Theory · Computer Science 2024-11-26 Rémi Morvan

The aim of this paper is to show that even if the natural algebraic semantic for modal (normal) logic is modal algebra, the more general class of subordination algebras (roughly speaking, the non symmetric contact algebras) is adequate too…

Logic · Mathematics 2020-06-17 Laurent De Rudder , Georges Hansoul , Valentine Stetenfeld