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We consider two approaches to isotopy invariants of oriented links: one from ribbon categories and the other from generalized Yang-Baxter operators with appropriate enhancements. The generalized Yang-Baxter operators we consider are…

Geometric Topology · Mathematics 2012-05-18 Seung-moon Hong

We construct $R$-matrices (with a multidimensional spectral parameter) that include additive as well as non-additive parameters. They satisfy the colored Yang-Baxter equation. The solutions depend on a set of commuting operators. They…

High Energy Physics - Theory · Physics 2024-04-12 Pramod Padmanabhan , Kun Hao , Vladimir Korepin

Rota-Baxter operators and bialgebras go hand in hand in their applications, such as in the Connes-Kreimer approach to renormalization and the operator approach to the classical Yang-Baxter equation. We establish a bialgebra structure that…

Quantum Algebra · Mathematics 2021-12-22 Chengming Bai , Li Guo , Tianshui Ma

In this paper, we introduce the definition of extended $\mathcal{O}$-operators on a Novikov algebra $(A,\circ)$ associated to an $A$-bimodule Novikov algebra which is a generalization of the definition of $\mathcal{O}$-operators and show…

Rings and Algebras · Mathematics 2025-05-28 Jianfeng Yu , Yanyong Hong

We cast the classical Yang-Baxter equation (CYBE) in a variational context for the first time, by relating it to the theory of Lagrangian multiforms, a framework designed to capture integrability in a variational fashion. This provides a…

Exactly Solvable and Integrable Systems · Physics 2024-01-29 Vincent Caudrelier , Matteo Stoppato , Benoit Vicedo

Every unitary involutive solution of the quantum Yang-Baxter equation ("R-matrix") defines an extremal character and a representation of the infinite symmetric group $S_\infty$. We give a complete classification of all such Yang-Baxter…

Quantum Algebra · Mathematics 2023-11-27 Gandalf Lechner , Ulrich Pennig , Simon Wood

In 2008, J. Liberati defined what is a conformal Lie bialgebra and introduced the conformal classical Yang-Baxter equation (CCYBE). An $L$-invariant solution to the weak version of CCYBE provides a conformal Lie bialgebra structure. We…

Quantum Algebra · Mathematics 2025-08-20 Vsevolod Gubarev , Roman Kozlov

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

We derive the integral operator form for the general rational solution of the Yang-Baxter equation with $s\ell(2|1)$ symmetry. Considering the defining relations for the kernel of the R-operator as a system of second order differential…

Exactly Solvable and Integrable Systems · Physics 2009-11-07 S. E. Derkachov , D. Karakhanyan , R. Kirschner

Boundary solutions to the quantum Yang-Baxter (qYB) equation are defined to be those in the boundary of (but not in) the variety of solutions to the ``modified'' qYB equation, the latter being analogous to the modified classical Yang-Baxter…

q-alg · Mathematics 2016-09-08 Murray Gerstenhaber , Anthony Giaquinto

Rota-Baxter operators and bialgebras are closely connected in several applications, such as the Connes-Kreimer renormalization framework and the operator approach to the classical Yang-Baxter equation. The concept of a Rota-Baxter system…

Rings and Algebras · Mathematics 2026-02-25 Chan Zhao , Haiying Li , Tianshui Ma

$\mathcal{O}$-operators (also known as relative Rota-Baxter operators) on Lie algebras have several applications in integrable systems and the classical Yang-Baxter equations. In this article, we study $\mathcal{O}$-operators on hom-Lie…

Rings and Algebras · Mathematics 2021-02-03 Satyendra Kumar Mishra , Anita Naolekar

A Lie group is called orthogonal if it carries a bi-invariant pseudo Riemannian metric. Oscillator Lie groups constitutes a subclass of the class of orthogonal Lie groups. In this paper, we determine the Lie bialgebra structures and the…

Differential Geometry · Mathematics 2010-10-14 Mohamed Boucetta-Alberto Medina

A relative Rota-Baxter operator on Lie 2-groups is introduced as a pair of relative Rota-Baxter operators on the underlying Lie groups which is also a Lie groupoid morphism. Such an operator induces a factorization theorem for Lie 2-groups…

Mathematical Physics · Physics 2026-02-03 Honglei Lang , Shining Wang

$\mathcal{O}$-operators are important in broad areas in mathematics and physics, such as integrable systems, the classical Yang-Baxter equation, pre-Lie algebras and splitting of operads. In this paper, a deformation theory of…

Quantum Algebra · Mathematics 2020-07-27 Rong Tang , Chengming Bai , Li Guo , Yunhe Sheng

We study a twisted version of the Yang-Baxter Equation, called the Hom-Yang-Baxter Equation (HYBE), which is motivated by Hom-Lie algebras. Three classes of solutions of the HYBE are constructed, one from Hom-Lie algebras and the others…

Mathematical Physics · Physics 2009-03-27 Donald Yau

For every quantized Lie algebra there exists a map from the tensor square of the algebra to itself, which by construction satisfies the set-theoretic Yang-Baxter equation. This map allows one to define an integrable discrete quantum…

Mathematical Physics · Physics 2021-07-23 Vladimir V. Bazhanov , Sergey M. Sergeev

We obtain two series of spectral parameter dependent solutions to the generalized Yang-Baxter equations (GYBE), for definite types of $N_1^2\times N_2^2$ matrices with general dimensions $N_1$ and $N_2$. Appropriate extensions are presented…

Mathematical Physics · Physics 2023-10-27 Shahane A. Khachatryan

Given a rack Q and a ring A, one can construct a Yang-Baxter operator c_Q: V tensor V --> V tensor V on the free A-module V = AQ by setting c_Q(x tensor y) = y tensor x^y for all x,y in Q. In answer to a question initiated by D.N. Yetter…

Quantum Algebra · Mathematics 2014-10-01 Michael Eisermann

A review of some recent results on the dynamical theory of the Yang-Baxter maps (also known as set-theoretical solutions to the quantum Yang-Baxter equation) is given. The central question is the integrability of the transfer dynamics. The…

Quantum Algebra · Mathematics 2007-05-23 A. P. Veselov