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Almost a decade ago Vaughan Jones introduced a method to produce knots from elements of the Thompson groups $F$, which was later extended to the Brown-Thompson group $F_3$. In this article we define a way to produce permutations out of…

Geometric Topology · Mathematics 2022-12-27 Valeriano Aiello , Stefano Iovieno

Jones introduced a method to produce unoriented links from elements of the Thompson's group $F$, and proved that any link can be produced by this construction. In this paper, we attempt to investigate the relations between conjugacy classes…

Geometric Topology · Mathematics 2025-04-03 Yuanyuan Bao , Xiaobing Sheng

Noting that cycle diagrams of permutations visually resemble grid diagrams used to depict knots and links in topology, we consider the knot (or link) obtained from the cycle diagram of a permutation. We show that the permutations which…

Combinatorics · Mathematics 2020-07-10 Christopher R. Cornwell , Nathan McNew

We prove necessary and sufficient conditions on a family of (generalised) gridding matrices to determine when the corresponding permutation classes are partially well-ordered. One direction requires an application of Higman's Theorem and…

Combinatorics · Mathematics 2011-08-15 Robert Brignall

Given a knot diagram $D$, we construct a semi-threading circle for it which can be an axis of $D$ as a closed braid depending on knot diagrams. In particular, we consider semi-threading circles for minimal diagrams of a knot with respect to…

General Topology · Mathematics 2013-02-18 Jae-Wook Chung , Seulgi Jeong , Dongseok Kim

In [Jo14] and [Jo18] Vaughan Jones introduced a construction which yields oriented knots and links from elements of the oriented Thompson group $\vec{F}$. In this paper we prove, by analogy with Alexander's classical theorem establishing…

Geometric Topology · Mathematics 2020-03-11 Valeriano Aiello

We describe standard forms for elements of the higher-dimensional Thompson groups $nV$ arising from gridding subdivision processes. These processes lead to standard normal form descriptions for elements in these groups, and sizes of these…

Group Theory · Mathematics 2024-03-06 José Burillo , Sean Cleary , Brita Nucinkis

In paper "A new twist on Lorenz links" (Journal of Topology 2(2009), 227-248) Joan Birman and Ilya Kofman prove the coincidence of the class of Lorenz links and the class of twisted links. The proof in that work is algebraic. We will…

Geometric Topology · Mathematics 2010-06-17 Roman Razumovsky

In the present paper a criteria for a rectangular diagram to admit a simplification is given in terms of Legendrian knots. It is shown that there are two types of simplifications which are mutually independent in a sense. A new proof of the…

Geometric Topology · Mathematics 2013-10-22 Ivan Dynnikov , Maxim Prasolov

We prove that the links associated with positive elements of the oriented subgroup of the Thompson group are positive.

Geometric Topology · Mathematics 2025-01-13 Valeriano Aiello , Sebastian Baader

Tied links and the tied braid monoid were introduced recently by the authors and used to define new invariants for classical links. Here, we give a version purely algebraic-combinatoric of tied links. With this new version we prove that the…

Geometric Topology · Mathematics 2021-01-28 Francesca Aicardi , Jesus Juyumaya

We introduce and study strongly invertible Legendrian links in the standard contact three-dimensional space. We establish the equivariant analogs of basic results separately well-known for strongly invertible and Legendrian links, i.e. the…

Geometric Topology · Mathematics 2023-11-15 Carlo Collari , Paolo Lisca

The groups of link bordism can be identified with homotopy groups via the Pontryagin-Thom construction. B.J. Sanderson computed the bordism group of 3 component surface-links using the Hilton-Milnor Theorem, and later gave a geometric…

Geometric Topology · Mathematics 2014-10-01 J. Scott Carter , Seiichi Kamada , Masahico Saito , Shin Satoh

Twisted torus links are given by twisting a subset of strands on a closed braid representative of a torus link. T--links are a natural generalization, given by repeated positive twisting. We establish a one-to-one correspondence between…

Geometric Topology · Mathematics 2014-02-26 Joan Birman , Ilya Kofman

Inspired by the paper on quantum knots and knot mosaics [23] and grid diagrams (or arc presentations), used extensively in the computations of Heegaard-Floer knot homology [2,3,7,24], we construct the more concise representation of knot…

Geometric Topology · Mathematics 2011-12-30 Slavik V. Jablan , Ljiljana Radovic , Radmila Sazdanovic , Ana Zekovic

We define a diagrammatic category that is equivalent to tilting representations for the orthogonal group. Our construction works in characteristic not equal to two. We also describe the semisimplification of this category.

Representation Theory · Mathematics 2026-04-07 Elijah Bodish , Daniel Tubbenhauer

In this paper we introduce the tied links, i.e. ordinary links provided with some ties between strands. The motivation for introducing such objects originates from a diagrammatical interpretation of the defining generators of the so-called…

Geometric Topology · Mathematics 2016-06-06 Francesca Aicardi , Jesus Juyumaya

We partially determine grid homology (combinatorial knot Floer homology) of diagonal knots, which are conjectured to be equivalent to positive braid knots, by exploiting nice grid diagrams. Its next-to-top term detects the number of prime…

Geometric Topology · Mathematics 2025-07-18 Hajime Kubota

We use a decomposition of the tensor of the fundamental representation of the quantum group $U_q(\mathfrak{sl}_N)$ and the Rosso-Jones formula to establish a peculiar ``panhandle'' shape of the HOMFLY-PT polynomial of the reverse parallel…

Geometric Topology · Mathematics 2025-12-30 Andrei Mironov , Hisham Sati , Vivek Kumar Singh , Alexander Stoimenov

We review a constructions of knots from elements of the Thompson groups due to Vaughan Jones, which comes in two flavours: oriented and unoriented.

Geometric Topology · Mathematics 2025-04-08 Valeriano Aiello
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