Homogeneous Spaces
Mostrando 13-24 de 39 artigos, teses e dissertações.
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13. Em busca de um algoritmo construtivo para autômatos celulares reversíveis: a abordagem das regras primitivas e derivadas
Cellular automata have been studied as computer models in many different areas. They have many properties, one of them being reversibility. Reversible cellular automata can be used, among other applications, for data compressing and encryption. Apparently, the reversible rules featured in the literature seem to have been derived through exhaustive searches i
Publicado em: 2008
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14. THE SOCIAL-TERRITORIAL DIFFERENCIATION AND TRANSFORMATION IN THE AGRARIAN SPACE IN MISSÕES/RS / AS DIFERENCIAÇÕES E TRANSFORMAÇÕES SÓCIOTERRITORIAS NO ESPAÇO AGRÁRIO DAS MISSÕES/RS
This research aims to investigate the dynamic and the process of differenciation that happened in the agrarian space of the Developmental Regional Council Missões. The region of study is located in the northwest of Rio Grande do Sul State and it is caracterized specially by its eminently agricultural features and the predominance of the familiar agriculture
Publicado em: 2008
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15. Arithmetic fuchsian groups identified in quaternion orders for the construction of signal constellations / Grupos fuchsianos aritmeticos identificados em ordens dos quaternios para construção de constelações de sinais
Within the context of digital communications system in homogeneous space in particular, in hyperbolic spaces, it is necessary to establish systematic procedure for the construction of lattices O ; as the basic entity for construction of eometrically uniforms signal constellations. By this procedure we identify the algebraic and geometric structures to constr
Publicado em: 2007
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16. Reflexivity of spaces of linear operators and spaces of homogeneous polynomials / Reflexidade de espaços de operadores lineares e espaços de polinomios homogeneos
Sejam E e F espaços de Banach. Os principais resultados que iremos expor serão teoremas sobre a reflexividade de L (E; F) e P (mE; F).. No capítulo 2, estudamos alguns conceitos básicos da teoria de produtos tensoriais de espaços de Banach. A importância do capítulo 2 para o trabalho seria, essencialmente, a identificação do espaço de operadores li
Publicado em: 2007
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17. Semigroups generated by cosets and characteristics functions of semigroups / Semigrupos gerados por classes laterais e funções caracteristicas de semigrupos
This work is made of two parts. In the first one, we gave necessary and sufficient conditions for a family of cosets of a Lie subgroup to generate a subsemigroup with nonempty interior. We apply these conditions to symmetric pairs where the group is semi-simple. As a consequence we prove that for several involutive automorphisms the fixed points subgroup is
Publicado em: 2007
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18. Control sets on orbits and ordered compactification of semigroups / Conjuntos de controle em orbitas adjuntas e compactificações ordenadas de semigrupos
In this work we study two distinct problems: semigroup actions on adjoint orbits and compacti?cation of semigroups. For the study of the semigroup actions, we consider a semi-simple connected noncompact Lie group G and the adjoint orbit through elements in a maximal abelian subalgebra contained in the complement of a maximal compactly embedded subalgebra of
Publicado em: 2007
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19. A comunicação presencial de sem-tetos na cidade de São Paulo: a produção e distribuição da Revista Ocas
This research investigates the live communication of homeless people in São Paulo City in places with are meeting points such as cultural centers, theaters, movie theaters, bookstores and universities. The study is based on the experiences of those who take part in the production and sale of the Ocas Magazine, a brazilian example of a street paper, a worldw
Publicado em: 2007
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20. Zeros of polynomials and properties polynomials in Banach spaces / Zeros de polinômios e propriedades polinomiais em espaços de Banach
Neste trabalho temos por objetivo apresentar alguns resultados relacionados aos temas abordados por Aron, Choi e Llavona (1995), Aron e Dimant (2002) e Aron e Rueda (1997). Primeiramente, vamos estudar as propriedades polinomiais (P) e (RP) para os espaços de Banach e a propriedade ACL para as funções definidas entre as bolas unitárias fechadas do espaç
Publicado em: 2006
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21. Superficies em certos espaços homogeneos tridimensionais / Surfaces in some homogeneous tridimensional spaces
Neste trabalho estudamos superfícies em variedades Riemannianas homogêneas tridimensionais com condições sobre a geometria intrínseca e/ou extrínseca. Em particular: 1. Resolvemos o Problema de Bjõrling para superfícies mínimas que contêm uma dada faixa analítica em grupos de Lie munidos de uma métrica invariante à esquerda. 2. Classificamos as
Publicado em: 2005
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22. Metricas de Einstein em variedades bandeira / Einstein metrics on flag manifolds
The goal of this work is to contribute the study of invariant Hermitian geometry on flag manifolds. We study the class of Einstein metrics on flag manifolds. In this work we present new solutions for the invariant Einstein equation on flag manifolds, maximals or not, of Ai case. Let W a subgroup of the Weyl group. We described a natural action of W on the so
Publicado em: 2005
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23. DeterminaÃÃo e remoÃÃo de erros em mapas de colheita de milho
The automation of the the monitorated harvest ends introducing systematic errors to the process, for this reason, a methodology of filtering of data became necessary for obtaining confident maps and it treats about the mean error factor, which is the delay time. The delay time is that spent between the cutting of the plant by the platformâs bar and the pass
Publicado em: 2005
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24. New daylight redirecting devices: evaluation of their performance under real sky condition / Sistemas inovadores de iluminação natural : estudo de seu desempenho sob condições de ceu real em Campinas, SP
The importance of this research relies on the quantitative evaluation of different daylighting devices, available in the international market, by means of acquiring the iIIuminance through models. This work was accomplished with objective of verifying the application of these systems, restricted to lateral iIIumination in national territory, if they would br
Publicado em: 2005