Results 11 to 20 of about 34,079 (89)

Untangling the Mechanics and Topology in the Frictional Response of Long Overhand Elastic Knots [PDF]

open access: yes, 2015
We combine experiments and theory to study the mechanics of overhand knots in slender elastic rods under tension. The equilibrium shape of the knot is governed by an interplay between topology, friction, and bending. We use precision model experiments to
Audoly, B.   +3 more
core   +1 more source

Chirality of Knots $9_{42}$ and $10_{71}$ and Chern-Simons Theory [PDF]

open access: yes, 1994
Upto ten crossing number, there are two knots, $9_{42}$ and $10_{71}$ whose chirality is not detected by any of the known polynomials, namely, Jones invariants and their two variable generalisations, HOMFLY and Kauffman invariants.
Govindarajan, T. R.   +2 more
core   +2 more sources

The forbidden number of a knot [PDF]

open access: yes, 2014
Every classical or virtual knot is equivalent to the unknot via a sequence of extended Reidemeister moves and the so-called forbidden moves. The minimum number of forbidden moves necessary to unknot a given knot is an invariant we call the {\it forbidden
Crans, Alissa   +2 more
core   +3 more sources

A Self-Linking Invariant of Virtual Knots [PDF]

open access: yes, 2004
In this paper we introduce a new invariant of virtual knots and links that is non-trivial for infinitely many virtuals, but is trivial on classical knots and links.
Kauffman, Louis H.
core   +1 more source

Legendrian and transverse twist knots

open access: yes, 2011
In 1997, Chekanov gave the first example of a Legendrian nonsimple knot type: the $m(5_2)$ knot. Epstein, Fuchs, and Meyer extended his result by showing that there are at least $n$ different Legendrian representatives with maximal Thurston--Bennequin ...
Etnyre, John B.   +2 more
core   +1 more source

The Theory of Pseudoknots

open access: yes, 2012
Classical knots in $\mathbb{R}^3$ can be represented by diagrams in the plane. These diagrams are formed by curves with a finite number of transverse crossings, where each crossing is decorated to indicate which strand of the knot passes over at that ...
Henrich, Allison   +5 more
core   +1 more source

Virtual Knot Theory --Unsolved Problems

open access: yes, 2005
This paper is an introduction to the theory of virtual knots and links and it gives a list of unsolved problems in this subject.Comment: 33 pages, 7 figures, LaTeX ...
Fenn, Roger   +2 more
core   +7 more sources

Knot Probabilities in Random Diagrams

open access: yes, 2015
We consider a natural model of random knotting- choose a knot diagram at random from the finite set of diagrams with n crossings. We tabulate diagrams with 10 and fewer crossings and classify the diagrams by knot type, allowing us to compute exact ...
Cantarella, Jason   +2 more
core   +1 more source

Post Quantum Cryptography from Mutant Prime Knots

open access: yes, 2010
By resorting to basic features of topological knot theory we propose a (classical) cryptographic protocol based on the `difficulty' of decomposing complex knots generated as connected sums of prime knots and their mutants.
Adams C.   +13 more
core   +1 more source

Bridge numbers for virtual and welded knots

open access: yes, 2014
Using Gauss diagrams, one can define the virtual bridge number ${\rm vb}(K)$ and the welded bridge number ${\rm wb}(K),$ invariants of virtual and welded knots with ${\rm wb}(K) \leq {\rm vb}(K).$ If $K$ is a classical knot, Chernov and Manturov showed ...
Boden, Hans U., Gaudreau, Anne Isabel
core   +1 more source

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