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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

Um Teorema de Compacidade para o Problema de Yamabe

Caju, Rayssa Helena Aires de Lima 26 February 2014 (has links)
Submitted by Maike Costa (maiksebas@gmail.com) on 2016-03-30T13:20:26Z No. of bitstreams: 1 arquivo total.pdf: 931700 bytes, checksum: fa2250c9a71513dd14a73f23193f0cfa (MD5) / Made available in DSpace on 2016-03-30T13:20:26Z (GMT). No. of bitstreams: 1 arquivo total.pdf: 931700 bytes, checksum: fa2250c9a71513dd14a73f23193f0cfa (MD5) Previous issue date: 2014-02-26 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / In this paper we prove the compactness of the full set of solutions of the Yamabe problem when n 24. We begin with the study of basic properties of blow-up points and then prove sharp pointwise estimates that will be crucial for the proof of Weyl Vanishing Theorem in these dimensions. The compactness problem then reduces to show the positivity of a certain quadratic form. We also show that this quadratic form has negative eingenvalues, if n 25. It is noteworthy that during this process the Positive Mass Theorem is a key tool in obtaining the main result. / Neste trabalho provaremos a compacidade do conjunto de solu cões do problema de Yamabe quando n 24. Iniciaremos com o estudo das propriedades báasicas de pontos de blow-up e em seguida provaremos estimativas pontuais, ótimas em certo sentido, que ser~ao de fundamental importância para a demonstra cão do Teorema do Anulamento de Weyl nestas dimensoes. O problema de compacidade ent~ao se reduz a mostrar a positividade de uma certa forma quadr atica. Provaremos ainda que, se n 25, tal forma quadr atica tem autovalores negativos. Vale ressaltar que durante tal processo o Teorema de Massa Positiva ser a uma ferramenta chave na obten cão do resultado principal.

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