The study of knot invariants is a large and active area of research in the field of knot theory. In the early 1990s, Russian mathematican Victor Vassiliev developed a series of numerical knot invariants, now known as Vassiliev invariants. These invariants have sparked a great deal of interest in the mathematical community, and it is conjectured that, together, they formulate a complete knot invariant. The computation of these invariants is largely algebraic, and unfortunately the values do not appear to describe any intrinsic properties of the knot. In this thesis, a geometric interpretation of the second Vassiliev invariant is provided by examining occurrances of five distinct points on the knot that lie on a common circle in the ambient space. This process is then extended to include an analysis of six-point cocircularities of knots as well. / Graduate

Thesis (Ph. D.)--Lehigh University, 1997. / Includes vita. Bibliography: leaves 65-66.

Thèse--Paris. / Bibliography: p. 110-112.

Thèse--Paris. / Bibliography: p. 110-112.

Thesis--Princeton University, 1966. / Includes bibliographical references.

No description available.

Typescript. Includes vita and abstract. Includes bibliographical references (leaves 163-164) Also available online in Scholars' Bank; and in ProQuest, free to University of Oregon users.

Let n > 1. We prove a homological stability theorem for the diffeomorphism groups of (4n+1)-dimensional manifolds, with respect to forming the connected sum with (2n-1)-connected, (4n+1)-dimensional manifolds that are stably parallelizable. Our techniques involve the study of the action of the diffeomorphism group of a manifold M on the linking form associated to the homology groups of M. In order to study this action we construct a geometric model for the linking form using the intersections of embedded and immersed Z/k-manifolds. In addition to our main homological stability theorem, we prove several results regarding disjunction for embeddings and immersions of Z/k-manifolds that could be of independent interest.

Orientador: Carlos Eduardo Duran Fernandez / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Matematica, Estatistica e Computação Cientifica / Made available in DSpace on 2018-08-14T00:21:52Z (GMT). No. of bitstreams: 1 Speranca_LlohamDallagnol_M.pdf: 1442574 bytes, checksum: eec573204734790dd464f4ba0a79d6c5 (MD5) Previous issue date: 2009 / Resumo: Apresentaremos neste trabalho alguns dos modelos clássicos em geometria e topologia diferencial para algumas variedades diferenciáveis com o mesmo tipo homotópico de uma esfera. Em seguida apresentaremos construções mais recentes dos mesmos e algumas de suas propriedades. / Abstract: We show in this work some of the classical models in geometry and diferential topology for some diferentiable manifolds with the same homotopy type of the sphere. We follow with an exposition of recent work and some of its properties. / Mestrado / Topologia / Mestre em Matemática

No description available.