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We consider involutive, non-degenerate, finite set theoretic solutions of the Yang-Baxter equation. Such solutions can be always obtained using certain algebraic structures that generalize nil potent rings called braces. Our main aim here…

Mathematical Physics · Physics 2021-09-23 Anastasia Doikou

We introduce a novel algebraic structure called di-skew brace by which we show that generalized digroups systematically yield bijective, non-degenerate solutions to the set-theoretic Yang-Baxter equation. We study the structural properties…

Quantum Algebra · Mathematics 2026-01-08 Andrea Albano , Paola Stefanelli

A unitary operator that satisfies the constant Yang-Baxter equation immediately yields a unitary representation of the braid group B n for every $n \ge 2$. If we view such an operator as a quantum-computational gate, then topological…

Quantum Physics · Physics 2017-10-11 Gorjan Alagic , Aniruddha Bapat , Stephen Jordan

Braces and linear cycle sets are algebraic structures playing a major role in the classification of involutive set-theoretic solutions to the Yang-Baxter equation. This paper introduces two versions of their (co)homology theories. These…

Group Theory · Mathematics 2016-07-12 V. Lebed , L. Vendramin

Braided algebras are associative algebras endowed with a Yang-Baxter operator that satisfies certain compatibility conditions involving the multiplication. Along with Hochschild cohomology of algebras, there is also a notion of Yang-Baxter…

Quantum Algebra · Mathematics 2025-06-13 Masahico Saito , Emanuele Zappala

Several years ago, it was proposed that the usual solutions of the Yang-Baxter equation associated to Lie groups can be deduced in a systematic way from four-dimensional gauge theory. In the present paper, we extend this picture, fill in…

High Energy Physics - Theory · Physics 2019-04-23 Kevin Costello , Edward Witten , Masahito Yamazaki

We develop new methods for computing the Hochschild (co)homology of monoids which can be presented as the structure monoids of idempotent set-theoretic solutions to the Yang--Baxter equation. These include free and symmetric monoids;…

Algebraic Topology · Mathematics 2016-07-28 Victoria Lebed

Braces were introduced by Rump as a promising tool in the study of the set-theoretic solutions of the Yang-Baxter equation. It has been recently proved that, given a left brace $B$, one can construct explicitly all the non-degenerate…

Group Theory · Mathematics 2016-10-04 D. Bachiller , F. Cedó , E. Jespers , J. Okninski

The problem of constructing all the non-degenerate involutive set-theoretic solutions of the Yang-Baxter equation recently has been reduced to the problem of describing all the left braces. In particular, the classification of all finite…

Quantum Algebra · Mathematics 2017-05-25 David Bachiller , Ferran Cedó , Eric Jespers , Jan Okniński

The quantum Yang-Baxter equation is a braiding condition on vector spaces which is of high relevance in several fields of mathematics, such as knot theory and quantum group theory. Their combinatorial counterpart are set-theoretic solutions…

Quantum Algebra · Mathematics 2024-10-21 Carsten Dietzel , Silvia Properzi , Senne Trappeniers

Braided algebras are algebraic structures consisting of an algebra endowed with a Yang-Baxter operator, satisfying some compatibility conditions.Yang-Baxter Hochschild cohomology was introduced by the authors to classify infinitesimal…

Quantum Algebra · Mathematics 2025-02-25 Masahico Saito , Emanuele Zappala

It is a classical result in representation theory that the braid group $\mathscr{B}_\mathfrak{g}$ of a simple Lie algebra $\mathfrak{g}$ acts on any integrable representation of $\mathfrak{g}$ via triple products of exponentials in its…

Representation Theory · Mathematics 2025-08-06 Noah Friesen , Alex Weekes , Curtis Wendlandt

Any solution to the Yang-Baxter equation yields a family of representations of braid groups. Under certain conditions, identified by Turaev, the appropriately normalized trace of these representations yields a link invariant. Any…

Quantum Physics · Physics 2016-03-24 Gorjan Alagic , Michael Jarret , Stephen P. Jordan

We compute the braided groups and braided matrices $B(R)$ for the solution $R$ of the Yang-Baxter equation associated to the quantum Heisenberg group. We also show that a particular extension of the quantum Heisenberg group is dual to the…

High Energy Physics - Theory · Physics 2009-10-22 W. K. Baskerville , S. Majid

Given a skew left brace $B$, a method is given to construct all the non-degenerate set-theoretic solutions $(X,r)$ of the Yang Baxter equation such that the associated permutation group $\mathcal{G}(X,r)$ is isomorphic, as a skew left…

Quantum Algebra · Mathematics 2016-11-28 David Bachiller

A generalization of the Yang-Baxter algebra is found in quantizing the monodromy matrix of two (m)KdV equations discretized on a space lattice. This braided Yang-Baxter equation still ensures that the transfer matrix generates operators in…

High Energy Physics - Theory · Physics 2008-11-26 Davide Fioravanti , Marco Rossi

We examine links between the theory of braces and set theoretical solutions of the Yang-Baxter equation, and fundamental concepts from the theory of quantum integrable systems. More precisely, we make connections with Hecke algebras and we…

Mathematical Physics · Physics 2022-06-30 Anastasia Doikou , Agata Smoktunowicz

We study the class of one-generator solutions to the Yang-Baxter equation, extending some recent results concerning the classes of involutive and multipermutation solutions. Moreover we show the precise relationship between indecomposable…

Quantum Algebra · Mathematics 2025-06-17 Marco Castelli

Let $V$ be a braided vector space, that is, a vector space together with a solution $\hat{R}\in {\text{End}}(V\otimes V)$ of the Yang--Baxter equation. Denote $T(V):=\bigoplus_k V^{\otimes k}$. We associate to $\hat{R}$ a solution…

Quantum Algebra · Mathematics 2015-05-18 T. Grapperon , O. V. Ogievetsky

We study solutions of the Yang-Baxter equation on a tensor product of an arbitrary finite-dimensional and an arbitrary infinite-dimensional representations of the rank one symmetry algebra. We consider the cases of the Lie algebra sl_2, the…

Mathematical Physics · Physics 2015-03-02 D. Chicherin , S. Derkachov