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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Pathwidth and component number of links

Mdakane, Sizwe 07 May 2015 (has links)
A research report submitted to the Faculty of Science, in partial fulfilment of the requirements for the degree of Master of Science, University of the Witwatersrand. November 2014. / Knot theory is a branch of algebraic topology that is concerned with studying the interesting geometrical structures known as knots. The idea of a knot in the theory of knots is entirely different from everyday’s idea of knots, that is, a knot has free ends. In knot theory a knot is defined as a knotted loop of string which does not have free ends unless we cut it using a pair of scissors. The interesting aspect of knot theory is that it enables us to transfer techniques from graph theory, algebra, topology, group theory and combinatorics to study different classes of knots. In this dissertation we are only concerned with the relationship between knot theory and graph theory. It is widely known in knot theory literature that a knot has a corresponding signed planar graph and that a signed planar graph also has a corresponding knot which depends on the signs of the edges of its signed planar graph. This provides a foundation of a solid relationship between knot theory and graph theory, and it allows for some of the notions in graph theory to be transferred to knot theory. In this dissertation we study the path width and component number of links through their corresponding graphs.
2

On thickness of knots and its properties. / On thickness of knots & its properties

January 2006 (has links)
Ho Wing Yin. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (leaves 67-68). / Abstracts in English and Chinese. / Chapter 0 --- Introduction --- p.5 / Chapter 1 --- Basics of Differential Topology and Knot Theory --- p.7 / Chapter 1.1 --- Elementary Differential Topology --- p.7 / Chapter 1.2 --- Elementary Knot Theory --- p.13 / Chapter 1.2.1 --- Basic Definition --- p.13 / Chapter 1.2.2 --- Regular Projection --- p.14 / Chapter 1.2.3 --- Classical Knot Invariants --- p.15 / Chapter 2 --- Thickness of Knots --- p.17 / Chapter 2.1 --- Thickness and its Curvature --- p.17 / Chapter 2.2 --- Consequences of the Main Theorem --- p.27 / Chapter 2.3 --- Polygonal Representation of Knot --- p.30 / Chapter 2.4 --- Self-distance and Main Theorem --- p.35 / Chapter 3 --- Energy --- p.37 / Chapter 3.1 --- Normal Energy and Symmetric Energy --- p.37 / Chapter 3.2 --- Mobius Energy --- p.48 / Chapter 3.3 --- Another Formulation of Mobius Energy --- p.57 / Chapter 3.4 --- A Non Self-Repulsive Energy Function --- p.62 / Bibliography --- p.67
3

Geometric knot theory.

January 2004 (has links)
Hui, Wing San. / Thesis submitted in: November 2003. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2004. / Includes bibliographical references (leaves 58-60). / Abstracts in English and Chinese. / Chapter 1 --- Introduction --- p.1 / Chapter 1.1 --- Introduction --- p.1 / Chapter 1.2 --- Outline of Thesis --- p.2 / Chapter 2 --- Basic Knowledge of Knot Theory --- p.3 / Chapter 2.1 --- Preparation --- p.3 / Chapter 2.1.1 --- "Knots, Knot Equivalence and Isotopic Knot" --- p.3 / Chapter 2.1.2 --- Tame and Wild Knots --- p.5 / Chapter 2.2 --- Some Invariants and Quantities about Knot --- p.7 / Chapter 2.2.1 --- Projection of Knot and Crossing Number --- p.7 / Chapter 2.2.2 --- Braids and Braid Index --- p.7 / Chapter 3 --- Minimal Stick Number --- p.11 / Chapter 3.1 --- History and Definition --- p.11 / Chapter 3.2 --- Minimal Stick Number on Some Simple Knots --- p.12 / Chapter 3.3 --- Some Theorems on the Minimal Stick Number --- p.14 / Chapter 4 --- Superbridge Index --- p.22 / Chapter 4.1 --- "Definitions of Bridge Index, Superbridge Index and Total Curvature" --- p.22 / Chapter 4.2 --- Superbridge Index and Braid Index --- p.25 / Chapter 4.3 --- "Relations between Bridge Index, Superbridge Index and Total Curvature" --- p.29 / Chapter 4.4 --- Superbridge Index and Minimal Stick Number --- p.36 / Chapter 5 --- The Geometric Knot Space --- p.37 / Chapter 5.1 --- Definition of the Geometric Knot Space --- p.37 / Chapter 5.2 --- "Geometric Equivalence and Topological Properties of the Geometric Knot Space, Geo(n)" --- p.39 / Chapter 5.3 --- "The Spaces Geo(3), Geo(4) and Geo(5)" --- p.40 / Chapter 5.4 --- Topology of the Space Geo(6) --- p.43 / Chapter 6 --- Concluding Remarks --- p.52 / Chapter 6.1 --- Other Results on the Minimal Stick Number --- p.52 / Chapter 6.2 --- Minimal Stick Number and Superbridge Index of the Torus Knot --- p.54 / Chapter 6.3 --- Explorations of the Geometric Knot Spaces --- p.56 / Bibliography --- p.58
4

Topics on thickness and ropelength.

January 2006 (has links)
Liu Chun-Lung. / Thesis (M.Phil.)--Chinese University of Hong Kong, 2006. / Includes bibliographical references (leaves 98-100). / Chapter 1 --- Introduction --- p.5 / Chapter 2 --- Fundamentals of thickness --- p.7 / Chapter 2.1 --- Definition of thickness --- p.9 / Chapter 2.2 --- Basic theorem and corollaries --- p.10 / Chapter 2.3 --- Equivalent definitions --- p.17 / Chapter 3 --- Ropelength minimizer --- p.19 / Chapter 3.1 --- Existence of ropelength minimizer --- p.20 / Chapter 3.2 --- Some ropelength minimizers --- p.23 / Chapter 4 --- Thickness computation --- p.27 / Chapter 4.1 --- Definitions --- p.28 / Chapter 4.2 --- Octrope algorithm --- p.33 / Chapter 4.3 --- Minor improvements --- p.45 / Chapter 5 --- Arc presentation --- p.54 / Chapter 5.1 --- Definitions --- p.55 / Chapter 5.2 --- Basic Theorems --- p.57 / Chapter 5.3 --- Ropelength upper bound --- p.64 / Chapter 6 --- Hamiltonian knot projection --- p.74 / Chapter 6.1 --- Hamiltonian RPG --- p.75 / Chapter 6.2 --- Embedding of RPG --- p.78 / Chapter 6.3 --- Ropelength upper bound --- p.95 / Bibliography --- p.98
5

On knots with a census of the amphicheirals with twelve crossings

Haseman, Mary Gertrude, January 1918 (has links)
Thesis (Ph. D.)--Byrn Mawr College. / From the Transactions of the Royal Society of Edinburgh, v. 52 (1917).
6

Histochemistry and enzyme activity of resistant and susceptible cotton infected by Meloidogyne incognita

Noel, Gregory Ross, 1947- January 1972 (has links)
No description available.
7

Minimal embeddings of knots in the cubic lattice /

Wysong, Kimberly Ann, January 2008 (has links) (PDF)
Thesis (M.A.) -- Central Connecticut State University, 2008. / Thesis advisor: Nelson Castaneda. "... in partial fulfillment of the requirements for the degree of Master of Arts in Mathematical Sciences." Includes bibliographical references (leaves 98-99). Also available via the World Wide Web.
8

Numerical invariants of knot types

Goodrick, Richard Edward, January 1966 (has links)
Thesis (Ph. D.)--University of Wisconsin, 1966. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
9

The stretching factors and the degeneracy slopes of fibered alternating knots /

Bergbauer, Chin Young, January 1998 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 1998. / Vita. Includes bibliographical references (leaves 83-84). Available also in a digital version from Dissertation Abstracts.
10

The growth of the quantum hyperbolic invariants of the figure eight knot

Mollé, Heather Michelle. Frohman, Charles D. January 2009 (has links)
Thesis supervisor: Charles Frohman. Includes bibliographic references (p. 60).

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