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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

Grupos cobertos por seis subgrupos maximais / Groups covered for six subgroups

JÃnio Moreira de Alencar 18 March 2011 (has links)
CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / Esta dissertaÃÃo à baseada no artigo "Groups with a maximal irredundant 6-cover"de A. Abdollahi, M. J. Ataei, S. M. Jafarian Amiri, e A. Mohammadi Hassanabadi, onde caracterizam os grupos que admitem uma cobertura irredundante por seis subgrupos maximais com interseÃÃo livre de nÃcleo. Como uma aplicaÃÃo deste resultado caracterizamos os grupos que admitem uma cobertura por seis subgrupos prÃprios e nÃo admite cobertura com uma quantidade de membros menor que seis. Mostraremos tambÃm que o maior Ãndice|G : D| sobre todos os grupos G tendo uma cobertura irredundante por seis subgrupo prÃprios com interseÃÃo D à 36. / This dissertation is based on the article "Groups with a maximal irredundant 6-cover"of A. Abdollahi, MJ Ataei, SM Jafarian Amiri and A. Mohammadi Hassanabadi, which characterize groups with a maximal irredundante cover for six subgroups with core-free intersection. As an application of this result we characterize groups that admit a cover for six subgroups own and does not allow coverage an amount of less than six members. We will also show that the largest index |G : D| over all groups G having an irredundant cover for six subgroup with intersection D is 36.

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