Results 21 to 30 of about 66,871 (307)
The Heegaard genus of manifolds obtained by surgery on links and knots
International Journal of Mathematics and Mathematical Sciences, 1980 Let L⊂S3 be a fixed link. It is shown that there exists an upper bound on the Heegaard genus of any manifold obtained by surgery on L. The tunnel number of L, T(L), is defined and used as an upper bound.
Bradd Clark
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Journal 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
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Knots not concordant to L-space knots [PDF]
Periodica Mathematica Hungarica, 2020 AbstractIn this short note we use methods of Friedl, Livingston and Zentner to show that there are knots that are not algebraically concordant to a connected sum of positive and negative L-space knots.
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Modeling the Influence of Knots on Douglas-Fir Veneer Fiber Orientation
Fibers, 2020 This study presents a method for predicting the local fiber orientation of veneers made from peeled Douglas-fir logs based on the knowledge of the tree branch characteristics (location, radius, insertion angle, azimuth angle, and living branch ratio ...
Rémy Frayssinhes +3 more
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, 2005 Optical vortices generically arise when optical beams are combined. Recently, we reported how several laser beams containing optical vortices could be combined to form optical vortex loops, links and knots embedded in a light beam (Leach et al 2004 ...
Dennis, MR +13 more
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Assessment of the effect of quality factors on the assortment structure in poplar plantations [PDF]
Glasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2008 Quality factors affecting the assortment quality structure in poplar plantations were researched on nine temporary sample plots in the period 1997-2004, from the aspect of the implementation of roundwood standards. Sample plots were selected depending on
Danilović Milorad
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Age and environment affect constitutive immune function in Red Knots (Calidris canutus) [PDF]
, 2009 We studied subspecies, age and environmental effects on constitutive immune function (natural antibody and complement titres, haptoglobin activity and leukocyte concentrations) in Red Knots (Calidris canutus). We compared C. c. islandica and C.
Tieleman, B. Irene +6 more
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Influence of knots on the modulus of elasticity of wooden foundation piles [PDF]
, 2022 openLe città fondate su suoli di tipo paludoso, come Amsterdam e Venezia, sono caratterizzate da terreni con scarsa capacità portante, motivo per il quale vengono utilizzati pali di fondazione in legno.
DE MORI, GABRIELE
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Local-moves on knots and products of knots II [PDF]
Journal of Knot Theory and Its Ramifications, 2021 We use the terms, knot product and local-move, as defined in the text of this paper. Let [Formula: see text] be an integer [Formula: see text]. Let [Formula: see text] be the set of simple spherical [Formula: see text]-knots in [Formula: see text]. Let [Formula: see text] be an integer [Formula: see text].
Kauffman, Louis H., Ogasa, Eiji
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, 2006 We study the formation of knots on a macroscopic ball-chain, which is shaken on a horizontal plate at 12 times the acceleration of gravity. We find that above a certain critical length, the knotting probability is independent of chain length, while the time to shake out a knot increases rapidly with chain length. The probability if finding a knot after
Hickford, J. +3 more
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