Results 11 to 20 of about 279,221 (324)

FIBERED KNOTS AND VIRTUAL KNOTS [PDF]

open access: yesJournal of Knot Theory and Its Ramifications, 2013
We introduce a new technique for studying classical knots with the methods of virtual knot theory. Let K be a knot and J be a knot in the complement of K with lk (J, K) = 0. Suppose there is covering space [Formula: see text], where V(J) is a regular neighborhood of J satisfying V(J) ∩ im (K) = ∅ and Σ is a connected compact orientable 2-manifold.
Chrisman M.W., Manturov V.O.
openaire   +4 more sources

CHEBYSHEV KNOTS [PDF]

open access: yesJournal of Knot Theory and Its Ramifications, 2011
A Chebyshev knot is a knot which admits a parametrization of the form x(t) = Ta(t); y(t) = Tb(t); z(t) = Tc(t + ϕ), where a, b, c integers, Tn(t) is the Chebyshev polynomial of degree n, and φ ∈ R. Chebyshev knots are non-compact analogues of the classical Lissajous knots. We show that there are infinitely many Chebyshev knots with φ = 0.
Koseleff, Pierre-Vincent, Pecker, Daniel
openaire   +2 more sources

Subknots in ideal knots, random knots and knotted proteins [PDF]

open access: yesScientific Reports, 2015
AbstractWe introduce disk matrices which encode the knotting of all subchains in circular knot configurations. The disk matrices allow us to dissect circular knots into their subknots, i.e. knot types formed by subchains of the global knot. The identification of subknots is based on the study of linear chains in which a knot type is associated to the ...
Rawdon, Eric J.   +2 more
openaire   +6 more sources

Spatial large-span structures

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2023
Objective. This article discusses spatial large-span structures; provides features of their work; as well as layout examples. General dimensions and ways of stabilizing displacements are given.Method.
A. K. Yusupov   +2 more
doaj   +1 more source

Influence of ionic conditions on knotting in a coarse-grained model for DNA

open access: yesFrontiers in Chemistry, 2023
We investigate knotting probabilities of long double-stranded DNA strands in a coarse-grained Kratky-Porod model for DNA with Monte Carlo simulations. Various ionic conditions are implemented by adjusting the effective diameter of monomers.
Sarah Wettermann   +2 more
doaj   +1 more source

Knot Floer Homology of (1, 1)-Knots [PDF]

open access: yesGeometriae Dedicata, 2005
17 pages, 17 ...
Goda, H., Matsuda, H., Morifuji, T.
openaire   +3 more sources

Utilization of Scots Pine (Pinus sylvestris L.) Timber with Defects in Production of Engineered Wood Products

open access: yesDrvna Industrija, 2023
This study presents opportunities for the utilization of timber by-products with defects for manufacturing engineered wood panels. Three gluing methods were proposed for this waste raw material derived from Scots pine (Pinus sylvestris L.) wood.
Daniel Koynov   +3 more
doaj   +1 more source

Partial Classification of Lorenz Knots: Syllable Permutations of Torus Knots Words [PDF]

open access: yes, 2014
We define families of aperiodic words associated to Lorenz knots that arise naturally as syllable permutations of symbolic words corresponding to torus knots. An algorithm to construct symbolic words of satellite Lorenz knots is defined.
Franco, Nuno, Gomes, Paulo, Silva, Luis
core   +2 more sources

A colored operad for string link infection [PDF]

open access: yes, 2015
Budney recently constructed an operad that encodes splicing of knots. He further showed that the space of (long) knots is generated over this operad by the space of torus knots and hyperbolic knots, thus generalizing the satellite decomposition of knots ...
Burke, John, Koytcheff, Robin
core   +1 more source

Knotting trivial knots and resulting knot types [PDF]

open access: yesPacific Journal of Mathematics, 1993
Let \((V,K)\) be a pattern (i.e. \(V\) is a standardly embedded solid torus in oriented \(S^ 3\) and \(K\) a knot in \(V\)) and \(f\) an orientation preserving embedding from \(V\) into \(S^ 3\) such that \(f(V)\) is knotted. Answers to the following questions are given depending upon whether the winding number of \(K_ 2\) in \(V\) is zero or not.
openaire   +2 more sources

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