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The dual Lie bialgebra of a certain ``quasitriangular'' Lie bialgebra structure on the Heisenberg Lie algebra determines a (non-compact) Poisson--Lie group G. The compatible Poisson bracket on G is non-linear, but it can still be realized…

Operator Algebras · Mathematics 2007-05-23 Byung-Jay Kahng

In 1974 Orin Chein discovered a new family of Moufang loops which are now called Chein loops. Such a loop can be created from any group $W$ together with $\mathbb{Z}_2$ by a variation on a semi-direct product. We study these loops in the…

Group Theory · Mathematics 2011-10-31 Rieuwert J. Blok , Stephen Gagola

Let $G$ be a finite group and $C_2$ the cyclic group of order 2. Consider the 8 multiplicative operations $(x,y)\mapsto (x^iy^j)^k$, where $i$, $j$, $k\in\{-1, 1\}$. Define a new multiplication on $G\times C_2$ by assigning one of the above…

Group Theory · Mathematics 2007-05-23 Petr Vojtěchovský

In this paper, a semigroup algebra consisting of polynomial expressions with coefficients in a field $F$ and exponents in an additive submonoid $M$ of $\mathbb{Q}_{\ge 0}$ is called a Puiseux algebra and denoted by $F[M]$. Here we study the…

Commutative Algebra · Mathematics 2021-05-03 Felix Gotti

Groups are usually axiomatized as algebras with an associative binary operation, a two-sided neutral element, and with two-sided inverses. We show in this note that the same simplicity of axioms can be achieved for some of the most…

Group Theory · Mathematics 2015-09-21 J. D. Phillips , Petr Vojtěchovský

We determine the ring structure of the loop homology of some global quotient orbifolds. We can compute by our theorem the loop homology ring with suitable coefficients of the global quotient orbifolds of the form $[M/G]$ for $M$ being some…

Algebraic Topology · Mathematics 2018-03-16 Yasuhiko Asao

We introduce and study a notion of analytic loop group with a Riemann-Hilbert factorization relevant for the representation theory of quantum affine algebras at roots of unity with non trivial central charge. We introduce a Poisson…

Quantum Algebra · Mathematics 2013-02-13 Corrado De Concini , David Hernandez , Nicolai Reshetikhin

We study a variety of loops, RIF, which arise naturally from considering inner mapping groups, and a somewhat larger variety, ARIF. All Steiner and Moufang loops are RIF, and all flexible C-loops are ARIF. We show that all ARIF loops are…

Group Theory · Mathematics 2007-05-23 Michael K. Kinyon , Kenneth Kunen , J. D. Phillips

Let $G$ be a Lie group, $H$ a closed subgroup and $M$ the homogeneous space $G/H$. Each representation $\Psi$ of $H$ determines a $G$-equivariant principal bundle ${\mathcal P}$ on $M$ endowed with a $G$-invariant connection. We consider…

Symplectic Geometry · Mathematics 2013-04-30 Andrés Viña

We describe all constructions for loops of Bol-Moufang type analogous to the Chein construction $M(G,*,g_0)$ for Moufang loops.

Group Theory · Mathematics 2007-05-23 Michael K. Kinyon , J. D. Phillips , Petr Vojtěchovský

This paper proves that the variety generated by a centrally nilpotent Moufang loop (or centrally nilpotent A-loop) is finitely based.

Group Theory · Mathematics 2014-05-29 N. I. Sandu

An \emph{automorphic loop} (or \emph{A-loop}) is a loop whose inner mappings are automorphisms. Every element of a commutative A-loop generates a group, and $(xy)^{-1} = x^{-1}y^{-1}$ holds. Let $Q$ be a finite commutative A-loop and $p$ a…

Group Theory · Mathematics 2011-08-19 Premysl Jedlicka , Michael Kinyon , Petr Vojtechovsky

The class of all quasigroups is covered by six classes: the class of all asymmetric quasigroups and five varieties of quasigroups (commutative, left symmetric, right symmetric, semi-symmetric and totally symmetric). Each of these classes is…

Group Theory · Mathematics 2016-01-29 Halyna Krainichuk

We show that the affine quantum group $U_q(\hat{sl_2})$ is isomorphic to a bicrossproduct central extension $C Z{}_\chi\cross U_q(Lsl_2)$ of the quantum loop group $U_q(Lsl_2)$ by a quantum cocycle $\chi$, which we construct. We prove the…

q-alg · Mathematics 2008-02-03 S. Majid

Generalized Lie-Cartan theorem for linear birepresentations of an analytic Moufang loop is considered. The commutation relations of the generators of the birepresentation were found. In particular, the Lie algebra of the multiplication…

Representation Theory · Mathematics 2008-05-02 Eugen Paal

In this paper, we have studied the loops which are the semidirect products of a loop and a group. Also, the cummutant, nuclei and the center of such loops are studied.

Group Theory · Mathematics 2024-06-21 Ratan Lal , Ramjash Gurjar , Vipul Kakkar

We develop a mutation theory for quivers with oriented 2-cycles using a structure called a homotopy, defined as a normal subgroupoid of the quiver's fundamental groupoid. This framework extends Fomin-Zelevinsky mutations of 2-acyclic…

Combinatorics · Mathematics 2026-01-07 Fang Li , Siyang Liu , Lang Mou , Jie Pan

The representation sets of central loops are investigated and the results obtained are used to construct a finite C-loop. It is shown that for certain types of isotopisms, the central identities are isotopic invariant.

General Mathematics · Mathematics 2010-03-10 Temitope Gbolahan Jaiyeola , John Olushola Adeniran

In this paper we show that the nth quasitopological homotopy group of a topological space is isomorphic to (n-1)th quasitopological homotopy group of its loop space and by this fact we obtain some results about quasitopological homotopy…

Algebraic Topology · Mathematics 2017-03-07 T. Nasri , H. Mirebrahimi , H. Torabi

The notion of a Hopf module over a Hopf (co)quasigroup is introduced and a version of the fundamental theorem for Hopf (co)quasigroups is proven.

Quantum Algebra · Mathematics 2009-12-18 Tomasz Brzeziński