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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

Invariantes de Arnold de curvas planas / Arnold´s invariants of plane curves

Rosa, Lílian Neves Santa 25 February 2010 (has links)
Made available in DSpace on 2015-03-26T13:45:32Z (GMT). No. of bitstreams: 1 texto completo.pdf: 856081 bytes, checksum: f5a6f7169f203dce5ededbca0e983d1e (MD5) Previous issue date: 2010-02-25 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This dissertation is devoted to the study of Arnold's invariants of smooth immersed closed curves in the plane. The invariants J± and St were axiomatically defined by Arnold in [Ar1] as numerical characteristic of generic closed curves (immersion of the circle) on IR2: These three Arnold's invariants are associated to the transitions through direct and inverse self-tangencies and triple crossings. In this work, we study and present the Arnold's generic curve invariants and theirs properties. We also introduce and demonstrate the explicit formulas for calculating invariants given by Viro, Shumakovich and Polyak. / Esta dissertação é dedicada ao estudo dos invariantes de Arnold de curvas diferenciáveis fechadas imersas no plano. Os invariantes J± e St foram definidos axiomaticamente por Arnold em [Ar1] como característica numérica de curvas genéricas fechadas (imersões de círculos) no plano. Estes três invariantes estão associados às transições através de auto-tangências diretas e inversas e cruzamentos triplos. Neste trabalho estudamos e introduzimos os invariantes de Arnold de curvas genéricas e suas propriedades. Também introduzimos e demonstramos as fórmulas explícitas para cálculo destes invariantes dadas por Viro, Shumakovich e Polyak.

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