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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

Os teoremas de Ramsey e Freiman e suas aplicações envolvendo conjuntos com progressões aritméticas

Silva, Anna Carolina Fernandes da 17 February 2017 (has links)
Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Exatas, Departamento de Matemática, 2017. / Submitted by Fernanda Percia França (fernandafranca@bce.unb.br) on 2017-04-04T15:49:49Z No. of bitstreams: 1 2017_AnnaCarolinaFernandesdaSilva.pdf: 1408612 bytes, checksum: b2a670f5b830e1c5a1dc178ed08238ca (MD5) / Approved for entry into archive by Guimaraes Jacqueline(jacqueline.guimaraes@bce.unb.br) on 2017-04-13T13:05:59Z (GMT) No. of bitstreams: 1 2017_AnnaCarolinaFernandesdaSilva.pdf: 1408612 bytes, checksum: b2a670f5b830e1c5a1dc178ed08238ca (MD5) / Made available in DSpace on 2017-04-13T13:05:59Z (GMT). No. of bitstreams: 1 2017_AnnaCarolinaFernandesdaSilva.pdf: 1408612 bytes, checksum: b2a670f5b830e1c5a1dc178ed08238ca (MD5) / Essa dissertação trata da teoria combinatória dos números em conjuntos finitos de inteiros contendo progressões aritméticas, bem como da teoria de Ramsey, do teorema de Szemerédi e de alguns resultados adjacentes importantes. Além de apresentar o teorema de Freiman e exibir uma demonstração de uma generalização do teorema de Freiman, dada por Ruzsa, nós daremos duas importantes aplicações deste teorema, sendo que uma delas prova a versão quantitativa de uma conjectura de Erdös. / This work is about combinatorial number theory in finite sets of integers containing arithmetic progression. Also, we present Ramsey’s theory, Szemerédi’s theorem and some important ad-jacent results. Besides that, we introduce Freiman’s theorem and exhibit a demonstration of its generalization, given two applications of this theorem, one of which proves the quantitative. Version of an Erdos conjecture.

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