Results 1 to 10 of about 2,120 (58)

Primary decomposition in the smooth concordance group of topologically slice knots

open access: yesForum of Mathematics, Sigma, 2021
We address primary decomposition conjectures for knot concordance groups, which predict direct sum decompositions into primary parts. We show that the smooth concordance group of topologically slice knots has a large subgroup for which the conjectures ...
Jae Choon Cha
doaj   +1 more source

A simple algorithm to compute link polynomials defined by using skein relations

open access: yesComputational and Mathematical Biophysics, 2020
We give a simple and practical algorithm to compute the link polynomials, which are defined according to the skein relations. Our method is based on a new total order on the set of all braid representatives.
Zhao Xuezhi
doaj   +1 more source

On the torsional energy of torus knots under infinitesimal bending

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2023
The article deals with the infinitesimal bending theory application to the knots theory. The impact of infinitesimal bending on the torsional energy at torus knots is considered, and the results show that it is not stationary under infinitesimal bending.
Maksimović Miroslav D.   +4 more
doaj   +1 more source

A study about the Tutte polynomials of benzenoid chains

open access: yesTopological Algebra and its Applications, 2017
The Tutte polynomials for signed graphs were introduced by Kauffman. In 2012, Fath-Tabar, Gholam-Rezaeı and Ashrafı presented a formula for computing Tutte polynomial of a benzenoid chain. From this point on, we have also calculated the Tutte polynomials
Sahin Abdulgani
doaj   +1 more source

On modules over Laurent polynomial rings [PDF]

open access: yes, 2010
A finitely generated module over the ring L=Z[t, t^{-1}] of integer Laurent polynomials that has no Z-torsion is determined by a pair of sub-lattices of L^d.
Silver, Daniel S., Williams, Susan G.
core   +2 more sources

Properties of Topological Networks of Flexible Polygonal Chains

open access: yesComputational and Mathematical Biophysics, 2014
Trypanosomatida parasites, such as Trypanosoma and Leishmania, are the cause of deadly diseases in many third world countries. The three dimensional structure of their mitochondrial DNA, known as kinetoplast DNA (kDNA), is unique since it is organized ...
Arsuaga J.   +3 more
doaj   +1 more source

A note on a topological approach to the $\mu$-constant problem in dimension 2 [PDF]

open access: yes, 2013
We provide an example, which shows that studying homological and homotopical properties of cobordisms between arbitrary, that is not necessarily negative, graph manifolds is not enough to prove the $\mu$-constant conjecture of Le Dung Trang in complex ...
Borodzik, Maciej, Friedl, Stefan
core   +2 more sources

THE CONORMAL TORUS IS A COMPLETE KNOT INVARIANT

open access: yesForum of Mathematics, Pi, 2019
We use microlocal sheaf theory to show that knots can only have Legendrian isotopic conormal tori if they themselves are isotopic or mirror images.
VIVEK SHENDE
doaj   +1 more source

Introduction to disoriented knot theory

open access: yesOpen Mathematics, 2018
This paper is an introduction to disoriented knot theory, which is a generalization of the oriented knot and link diagrams and an exposition of new ideas and constructions, including the basic definitions and concepts such as disoriented knot ...
Altıntaş İsmet
doaj   +1 more source

Quandle and Biquandle Homology Calculation in R

open access: yesJournal of Open Research Software, 2018
In knot theory several knot invariants have been found over the last decades. This paper concerns itself with invariants of several of those invariants, namely the Homology of racks, quandles, biracks and biquandles.
Roger Fenn, Ansgar Wenzel
doaj   +1 more source

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