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Let $\mathcal {M}$ be the space of all, including singular, long knots in 3-space and for which a fixed projection into the plane is an immersion. Let $cl(\Sigma^{(1)}_{iness})$ be the closure of the union of all singular knots in $\mathcal…

Geometric Topology · Mathematics 2009-03-10 Thomas Fiedler

A major challenge in the study of active systems is to harness their non-equilibrium dynamics into useful work. We address this by showing how to design colloids with controllable spontaneous propulsion or rotation when immersed in active…

Soft Condensed Matter · Physics 2023-07-12 Alexander J. H. Houston , Gareth P. Alexander

We construct two complete invariants of oriented classical knots in space. The value of each invariant on any knot is a set, infinite for the first invariant and finite for the second. The finite set is computed algorithmically from any…

Geometric Topology · Mathematics 2023-06-02 Dimitrios Kodokostas

We show that every multilinear map between Euclidean spaces induces a unique, continuous, Minkowski multilinear map of the corresponding real cones of zonoids. Applied to the wedge product of the exterior algebra of a Euclidean space, this…

Metric Geometry · Mathematics 2024-01-10 Paul Breiding , Peter Bürgisser , Antonio Lerario , Léo Mathis

We describe a family of hyperbolic knots whose character variety contain exactly two distinct components of characters of irreducible representations. The intersection points between the components carry rich topological information. In…

Geometric Topology · Mathematics 2018-03-16 Michelle Chu

Consider $d$ disjoint closed subintervals of the unit interval and consider an orientation preserving expanding map which maps each of these subintervals to the whole unit interval. The set of points where all iterates of this expanding map…

Dynamical Systems · Mathematics 2008-02-03 Feliks Przytycki , Folkert Tangerman

In this paper, we numerically study the scattering of kinks in the noncanonical sine-Gordon model using Fourier spectral methods. The model depends on two free parameters, which control the localized inner structure in the energy density…

High Energy Physics - Theory · Physics 2022-03-08 I. Takyi , B. Barnes , H. M. Tornyeviadzi , J. Ackora-Prah

This work continues the analysis of complex dynamics in a class of bidimensional nonlinear hybrid dynamical systems with resets modeling neuronal voltage dynamics with adaptation and spike emission. We show that these models can generically…

Dynamical Systems · Mathematics 2017-01-05 Jonathan E. Rubin , Justyna Signerska-Rynkowska , Jonathan Touboul , Alexandre Vidal

Both classical and virtual knots arise as formal Gauss diagrams modulo some abstract moves corresponding to Reidemeister moves. If we forget about both over/under crossings structure and writhe numbers of knots modulo the same Reidemeister…

Geometric Topology · Mathematics 2009-02-03 Vassily Olegovich Manturov

We present new families of examples of non-simple prime Legendrian and transversal knots in tight Lens spaces, which demonstrate that the botany of Legendrians in Lens space is rich. In fact, there are more non-isotopic Legendrians that are…

Geometric Topology · Mathematics 2025-12-29 Ipsita Datta , Tanushree Shah

We discuss an infinite class of metabelian Von Neumann rho-invariants. Each one is a homomorphism from the monoid of knots to the real line. In general they are not well defined on the concordance group. Nonetheless, we show that they pass…

Geometric Topology · Mathematics 2014-10-01 Christopher William Davis

We consider the existence of simple closed geodesics or "geodesic knots" in finite volume orientable hyperbolic 3-manifolds. Previous results show that at least one geodesic knot always exists [Bull. London Math. Soc. 31(1) (1999) 81-86],…

Geometric Topology · Mathematics 2013-01-02 Sally M Kuhlmann

We consider ribbon n-knots for n\geq 2. For such knots we define a set of moves on ribbon disks, and show that any two ribbon disks for isotopic knots are related by a finite sequence of such moves and ambient isotopies. Using this we are…

Geometric Topology · Mathematics 2015-09-04 Blake Winter

Knots are familiar entities that appear at a captivating nexus of art, technology, mathematics, and science. As topologically stable objects within field theories, they have been speculatively proposed as explanations for diverse persistent…

We classify positive transversal torus knots in tight contact structures up to transversal isotopy.

Geometric Topology · Mathematics 2014-11-11 John B. Etnyre

By using the notion of a rigid R-matrix in a monoidal category and the Reshetikhin--Turaev functor on the category of tangles, we review the definition of the associated invariant of long knots. In the framework of the monoidal categories…

Quantum Algebra · Mathematics 2020-01-01 Rinat Kashaev

In the previous paper the author defined an infinite order plug $(P,\varphi)$ which gives rise to infinite Fintushel-Stern's knot-surgeries. Here, we give two 4-dimensional infinitely many exotic families $Y_n$, $Z_n$ of exotic enlargements…

Geometric Topology · Mathematics 2015-09-22 Motoo Tange

In this paper we consider the long-term behavior of points in ${\mathbb R}$ under iterations of continuous functions. We show that, given any Cantor set $\Lambda^*$ embedded in ${\mathbb R}$, there exists a continuous function $F^*:{\mathbb…

Dynamical Systems · Mathematics 2013-11-05 Benjamin Hoffman

In this paper we study how randomly generated knots occupy a volume of space using topological methods. To this end, we consider the evolution of the first homology of an immersed metric neighbourhood of a knot's embedding for growing…

Geometric Topology · Mathematics 2021-08-09 Daniele Celoria , Barbara I. Mahler

We study a spin chain for a confining string that arises at first order in degenerate perturbation from the strong-coupling expansion of the Kogut-Susskind Hamiltonian on a square lattice in the leading large $N$ expansion. We show some…

High Energy Physics - Theory · Physics 2024-05-09 David Berenstein , Hiroki Kawai