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For any twisted conjugate quandle $Q$, and in particular any Alexander quandle, there exists a group $G$ such that $Q$ is embedded into the conjugation quandle of $G$.

Geometric Topology · Mathematics 2023-01-18 Toshiyuki Akita

The article studies power complexes and generalized power complexes, and investigates the algebraic structure of their automorphism groups. The combinatorial incidence structures involved are cube-like, in the sense that they have many…

Combinatorics · Mathematics 2014-12-03 Andrew C. Duke , Egon Schulte

A quandle is an algebraic system originated in knot theory, and can be regarded as a generalization of symmetric spaces. The inner automorphism group of a quandle is defined as the group generated by the point symmetries (right…

Geometric Topology · Mathematics 2024-03-12 Konomi Furuki , Hiroshi Tamaru

A model structure on the category of (small) bigroupoids and pseudofunctors is constructed. In this model structure, every object is cofibrant. In order to keep certain calculations of manageable size, a coherence theorem for bigroupoids…

Category Theory · Mathematics 2018-09-05 Martijn den Besten

We call an affine algebraic supergroup quasireductive if its underlying algebraic group is reductive. We obtain some results about the structure and representations of reductive supergroups.

Representation Theory · Mathematics 2023-10-19 Vera Serganova

We give a complete description of the associated group of any quandle as a central extension of the inner-automorphism group. As an application, we compute the second quandle homology groups of quandles of some families, including those of…

Geometric Topology · Mathematics 2024-02-26 Katsumi Ishikawa

The axioms of a quandle imply that the columns of its Cayley table are permutations. This paper studies quandles with exactly one non-trivially permuted column. Their automorphism groups, quandle polynomials, (symmetric) cohomology groups,…

Quantum Algebra · Mathematics 2024-01-31 Nicholas Cazet

We are intereseted in quandles and their enveloping groups. Various results are proven. We show that a quandle $Q$ and its image in the enveloping group $G(Q)$ have isomorphic enveloping groups. The image quandle is injective. For $Q$ a…

Group Theory · Mathematics 2026-02-17 Mohamad Maassarani

We define a two-variable polynomial invariant of finite quandles. In many cases this invariant completely determines the algebraic structure of the quandle up to isomorphism. We use this polynomial to define a family of link invariants…

Quantum Algebra · Mathematics 2008-08-13 Sam Nelson

Generally, in any human field, a Smarandache Structure on a set A means a weak structure W on A such that there exists a proper subset B contained in A which is embedded with a stronger structure S. These types of structures occurin our…

General Mathematics · Mathematics 2007-05-23 W. B. Vasantha Kandasamy

Quandle is an algebraic system with one binary operation, but it is quite different from a group. Quandle has its origin in the knot theory and good relationships with the theory of symmetric spaces, so it is well-studied from points of…

Group Theory · Mathematics 2020-05-26 Akihiro Higashitani , Hirotake Kurihara

A quandle is an algebraic structure whose axioms correspond to the Reidemeister moves of knot theory. S. Kamada introduced the notion of a quandle with a good involution, which is later called a symmetric quandle. We are interested in the…

Geometric Topology · Mathematics 2022-06-14 Yuta Taniguchi

The principal aim of this article is to introduce and study n-valued quandles and n-corack bialgebras. We elaborate the basic methods of this theory, reproduce the coset construction known in the theory of n-valued groups. We also consider…

Group Theory · Mathematics 2023-12-20 Valeriy G. Bardakov , Tatyana A. Kozlovskaya , Dmitry V. Talalaev

Quandles can be regarded as generalizations of symmetric spaces. In the study of symmetric spaces, the notion of flatness plays an important role. In this paper, we define the notion of flat quandles, by referring to the theory of…

Differential Geometry · Mathematics 2015-09-30 Yoshitaka Ishihara , Hiroshi Tamaru

As an example of the categorical apparatus of pseudo algebras over 2-theories, we show that pseudo algebras over the 2-theory of categories can be viewed as pseudo double categories with folding or as appropriate 2-functors into…

Category Theory · Mathematics 2011-11-09 Thomas M. Fiore

This is a short survey paper, partly meant as a research announcement. Its purpose is to highlight some aspects of the interplay between quantales, inverse semigroups, and groupoids. Many of the results mentioned have not yet been presented…

Category Theory · Mathematics 2007-05-23 Pedro Resende

The aim of this paper is to propose a theory of derivations for quandles. Given a quandle $A$ admitting an action by a quandle $Q$, derivations from $Q$ to $A$ are introduced as twisted analogues of quandle homomorphisms. It is shown that…

Geometric Topology · Mathematics 2020-01-06 Neha Nanda , Mahender Singh , Manpreet Singh

The structure of categorical at zero semigroups is studied from the point of view their likeness to categories.

Group Theory · Mathematics 2013-12-06 A. Kostin , B. Novikov

We outline the recent classification of differential structures for all main classes of quantum groups. We also outline the algebraic notion of `quantum manifold' and `quantum Riemannian manifold' based on quantum group principal bundles, a…

Quantum Algebra · Mathematics 2007-05-23 S. Majid

This paper is devoted to qualgebras and squandles, which are quandles enriched with a compatible binary/unary operation. Algebraically, they are modeled after groups with conjugation and multiplication/squaring operations. Topologically,…

Algebraic Topology · Mathematics 2014-02-27 Victoria Lebed