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In this paper we study the combinatorics of quasi-trigonometric solutions of the classical Yang-Baxter equation, arising from simple vector bundles on a nodal Weierstrass cubic.

Algebraic Geometry · Mathematics 2017-09-26 Igor Burban , Lennart Galinat , Alexander Stolin

This work initiates a systematic study of the class of quasi bijective and quasi non-degenerate solutions to the set-theoretic Yang-Baxter equation. The motivation stems from the observation that solutions that arise from dual weak braces…

Quantum Algebra · Mathematics 2025-12-12 Marzia Mazzotta , Paola Stefanelli , Magdalena Wiertel

Since its introduction by Loday in 1995 with motivation from algebraic K-theory, dendriform dialgebras have been studied quite extensively with connections to several areas in mathematics and physics. A few more similar structures have been…

Rings and Algebras · Mathematics 2007-05-23 Kurusch Ebrahimi-Fard , Li Guo

A Rota-Baxter algebra, also known as a Baxter algebra, is an algebra with a linear operator satisfying a relation, called the Rota-Baxter relation, that generalizes the integration by parts formula. Most of the studies on Rota-Baxter…

Rings and Algebras · Mathematics 2021-02-01 Kurusch Ebrahimi-Fard , Li Guo

This paper introduces the notion of Rota-Baxter $C^{\ast}$-algebras. Here a Rota-Baxter $C^{\ast}$-algebra is a $C^{\ast}$-algebra with a Rota-Baxter operator. Symmetric Rota-Baxter operators, as special cases of Rota-Baxter operators on…

Operator Algebras · Mathematics 2021-09-17 Zhonghua Li , Shukun Wang

Notions of an (H, X)-bialgebroid and of its dynamical representation are proposed. The dynamical representations of each (H, X)-bialgebroid form a tensor category. Every dynamical Yang-Baxter map R(lambda) satisfying suitable conditions, a…

Quantum Algebra · Mathematics 2009-12-08 Youichi Shibukawa , Mitsuhiro Takeuchi

The aim of this paper is to define and study Yetter-Drinfeld modules over Hom-bialgebras, a generalized version of bialgebras obtained by modifying the algebra and coalgebra structures by a homomorphism. Yetter-Drinfeld modules over a…

Quantum Algebra · Mathematics 2015-06-17 Abdenacer Makhlouf , Florin Panaite

As a fundamental and ubiquitous combinatorial notion, species has attracted sustained interest, generalizing from set-theoretical combinatorial to algebraic combinatorial and beyond. The Rota-Baxter algebra is one of the algebraic…

Combinatorics · Mathematics 2025-01-14 Loic Foissy , Li Guo , Xiao-Song Peng , Yunzhou Xie , Yi Zhang

Rota-Baxter algebras were introduced to solve some analytic and combinatorial problems and have appeared in many fields in mathematics and mathematical physics. Rota-Baxter algebras provide a construction of pre-Lie algebras from…

Mathematical Physics · Physics 2007-12-13 Huihui An , Chengming Bai

We introduce braided Dunkl operators that are acting on a q-polynomial algebra and q-commute. Generalizing the approach of Etingof and Ginzburg, we explain the q-commutation phenomenon by constructing braided Cherednik algebras for which…

Quantum Algebra · Mathematics 2009-07-02 Yuri Bazlov , Arkady Berenstein

Quantum physics has revealed many interesting formal properties associated with the algebra of two operators, A and B, satisfying the partial commutation relation AB-BA=1. This study surveys the relationships between classical combinatorial…

Combinatorics · Mathematics 2015-03-17 Pawel Blasiak , Philippe Flajolet

In the paper we describe structures of quasitriangular Lie bialgebra on $gl_2(\mathbb C)$ using the classification of Rota-Baxter operators of nonzero weight on $gl_2(\mathbb C)$.

Rings and Algebras · Mathematics 2022-07-15 Maxim Goncharov

The Rota-Baxter operator and the modified Rota-Baxter operator on various algebras are both important in mathematics and mathematical physics. The former is originated from the integration-by-parts formula and probability with applications…

Rings and Algebras · Mathematics 2024-01-26 Shanghua Zheng , Li Guo , Huizhen Qiu

Let E be an operator algebra on a Hilbert space with finite-dimensional generated C*-algebra. A classification is given of the locally finite algebras and the operator algebras obtained as limits of direct sums of matrix algebras over E…

Operator Algebras · Mathematics 2007-05-23 S. C. Power

An algebra with bracket ({\sf AWB} for short) is an associative algebra endowed with a bilinear bracket satisfying a Leibniz-type compatibility condition, as introduced in \cite{casas}. It can be viewed as a noncommutative generalization of…

Representation Theory · Mathematics 2026-04-20 Sami Mabrouk

Baxter operators are constructed for quantum spin chains with deformed $s\ell_2$ symmetry. The parallel treatment of Yang-Baxter operators for the cases of undeformed, trigonometrically and elliptically deformed symmetries presented earlier…

Mathematical Physics · Physics 2015-06-12 D. Chicherin , S. Derkachov , D. Karakhanyan , R. Kirschner

We investigate certain bases of Hecke algebras defined by means of the Yang-Baxter equation, which we call Yang-Baxter bases. These bases are essentially self-adjoint with respect to a canonical bilinear form. In the case of the degenerate…

q-alg · Mathematics 2008-02-03 Alain Lascoux , Bernard Leclerc , Jean-Yves Thibon

In this paper, we introduce relative Rota-Baxter systems on Leibniz algebras and give some characterizations and new constructions. Then we construct a graded Lie algebra whose Maurer-Cartan elements are relative Rota-Baxter systems. This…

Rings and Algebras · Mathematics 2021-01-14 Apurba Das , Shuangjian Guo

We introduce an operad of formal fractions, abstracted from the Mould operads and containing both the Dendriform and the Tridendriform operads. We consider the smallest set-operad contained in this operad and containing four specific…

Combinatorics · Mathematics 2013-07-02 Frédéric Chapoton , Florent Hivert , Jean-Christophe Novelli

Starting from a single solution of QYBE (or CYBE) we produce an infinite family of solutions of QYBE (or CYBE) parametrized by transitive arrays and, in particular, by signed permutations. We are especially interested in cases when such…

Quantum Algebra · Mathematics 2026-02-10 Arkady Berenstein , Jacob Greenstein , Jian-Rong Li