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Related papers: Arborescence of positive Thompson links

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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

We extend a construction of Jones to associate $(n, n)$-tangles with elements of Thompson's group $F$ and prove that it is asymptotically faithful as $n \to\infty$. Using this construction we show that the oriented Thompson group $\vec F$…

Geometric Topology · Mathematics 2024-03-26 Vyacheslav Krushkal , Louisa Liles , Yangxiao Luo

In a recent paper Jones introduced a correspondence between elements of the Thompson group $F$ and certain graphs/links. It follows from his work that several polynomial invariants of links, such as the Kauffman bracket, can be…

Group Theory · Mathematics 2019-07-15 Valeriano Aiello , Roberto Conti

We show how to approximate diffeomorphisms of the closed interval and the circle by elements of Thompson's groups $F$ and $T$, respectively. This is relevant in the context of Jones' continuum limit of discrete multipartite systems and its…

Mathematical Physics · Physics 2021-02-15 Deniz E. Stiegemann

We introduce forest diagrams to represent elements of Thompson's group F. These diagrams relate to a certain action of F on the real line in the same way that tree diagrams relate to the standard action of F on the unit interval. Using…

Group Theory · Mathematics 2018-10-30 James M. Belk , Kenneth S. Brown

We introduce forest diagrams and strand diagrams for elements of Thompson's group F. A forest diagram is a pair of infinite, bounded binary forests together with an order-preserving bijection of the leaves. Using forest diagrams, we derive…

Group Theory · Mathematics 2007-08-28 James Belk

We consider random subgroups of Thompson's group $F$ with respect to two natural stratifications of the set of all $k$ generator subgroups. We find that the isomorphism classes of subgroups which occur with positive density are not the same…

Group Theory · Mathematics 2018-03-19 Sean Cleary , Murray Elder , Andrew Rechnitzer , Jennifer Taback

We prove an explicit formula for the tail of the colored Jones polynomial for a class of arborescent links in terms of a product of theta functions and/or false theta functions. We also provide numerical evidence towards a classification of…

Geometric Topology · Mathematics 2025-04-28 Robert Osburn , Matthias Storzer

In 2014 Jones showed how to associate links in the $3$-sphere to elements of Thompson's group $F$. We provide an analogue of this program for annular links and Thompson's group $T$. The main result is that any edge-signed graph embedded in…

Geometric Topology · Mathematics 2025-11-26 Louisa Liles

We prove that the tree almost automorphism groups admit exactly three commensurability classes of closed commensurated subgroups. Our proof utilizes an independently interesting characterization of subgroups of the tree almost automorphism…

Group Theory · Mathematics 2017-06-28 Adrien Le Boudec , Phillip Wesolek

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

The usual coherence theorem of MacLane for categories with multiplication assumes that a certain pentagonal diagram commutes in order to conclude that associativity isomorphisms are well defined in a certain practical sense. The practical…

Category Theory · Mathematics 2013-09-04 Matthew G. Brin

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

In this paper it is proved that the pure braided Thompson's group BF admits a bi-order, analog to the bi-order of the pure braid groups.

Group Theory · Mathematics 2007-05-23 Jose Burillo , Juan Gonzalez-Meneses

We give a unified solution to the conjugacy problem for Thompson's groups F, T, and V. The solution uses strand diagrams, which are similar in spirit to braids and generalize tree-pair diagrams for elements of Thompson's groups. Strand…

Group Theory · Mathematics 2019-04-26 James Belk , Francesco Matucci

For arborescent links, we present an efficient method of computing their Alexander polynomials. Applying this method, we express the Alexander polynomials of Montesinos links in terms of certain functions associated to rational tangles…

Geometric Topology · Mathematics 2026-04-02 Haimiao Chen

We show that the density of elements in Thompson's groups T and V which have north-south dynamics acting on the circle is positive with respect to a stratification in terms of size. We show that the fraction of element pairs which generate…

Group Theory · Mathematics 2020-06-08 Sean Cleary , Ariadna Fossas Tenas

A connection relating Tamari lattices on symmetric groups regarded as lattices under the weak Bruhat order to the positive monoid P of Thompson group F is presented. Tamari congruence classes correspond to classes of equivalent elements in…

Combinatorics · Mathematics 2007-05-23 Zoran Sunic

The pioneering work of Jones and Kauffman unveiled a fruitful relationship between statistical mechanics and knot theory. Recently, Jones introduced two subgroups $\vec{F}$ and $\vec{T}$ of the Thompson groups $F$ and $T$, respectively,…

Group Theory · Mathematics 2018-11-05 Valeriano Aiello , Roberto Conti

In a "naive" attempt to create algebraic quantum field theories on the circle, we obtain a family of unitary representations of Thompson's groups T and F for any subfactor. The Thompson group elements are the "local scale transformations"…

Group Theory · Mathematics 2014-12-25 Vaughan F. R. Jones
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