Vector Spaces
Mostrando 13-24 de 39 artigos, teses e dissertações.
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13. The Conley index for discontinuous vector fields / O indice de Conley para campos de vetores descontinuos
The Conley index is a used as a topological invariant in the analysis of the qualitative behavior of dynamical systems. lnitially the theory was developed for continuous flows in finite dimensional spaces and later extended to the infinite dimensional setting as well as to the discrete case. ln this work, we present a Conley index theory for a class of disco
Publicado em: 2008
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14. Hypercyclic operators on topological vector spaces / Operadores hipercíclicos em espaços vetoriais topológicos
Dado E um espaço vetorial topológico e T um operador linear contínuo em E, diremos que T é hipercíclico se, para algum elemento x pertencente a E, a órbita de x sob T, Orb(x,T)={x, Tx, T^2 x,...}, for densa em E. Nosso objetivo será apresentar alguns resultados sobre hiperciclicidade e observar como alguns espaços comportam-se diante dessa classe de
Publicado em: 2007
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15. Spherical codes with cyclic symmetries / Codigos esfericos com simetrias ciclicas
Euclidean spherical codes with symmetries are orbits of finite orthogonal matrix groups. These codes are also known as group codes. ln this work, the commutative group codes in even dimensions are viewed on flat tori, which are submanifolds of the sphere. Also, if the matrix group is cyclic, the generated code lies on a knot which wraps around a torus. If th
Publicado em: 2006
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16. Studies about personalization of the head-related transfer function in binaural virtual auditory displays. / Estudos sobre personalização da função de transferência relativa à cabeça em sistemas biaurais de reprodução acústica virtual.
This work presents several proposals associated with the optimal use of head-related transfer functions (HRTF) in virtual auditory spaces presented via headphones. These proposals lead to personalization of the HRTF to particular individuals, using a combination of the structural and morphological modeling techniques. In the context of structural modeling, t
Publicado em: 2006
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17. Geometric invariant theory and representations of quivers / Teoria geometrica dos invariantes e representações de quivers
This thesis is divided into two parts. ln the first part we present the main ideas and tools of Geometric lnvariant Theory, which is concerned with the following problem: ls it possible to give an algebraic structure to the quotient of an algebraic variety by the action of an algebraic group? Qne of the most important results says that an algebraic quotient
Publicado em: 2006
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18. ENVIRONMENTAL EDUCATION AND TRANSDISCIPLINARITY, A POSSIBEL MEETING IN THE TEACHER FORMATION: A SIMBOLIC RESEARCH / Educação ambiental e transdisciplinaridade, um encontro possível na formação docente: uma pesquisa simbólica.
The present dissertation seeks to share the experience and the results of the research in a school of the Public Net of Fundamental Teaching of the City Hall of Guarulhos, São Paulo, Brazil, close to response the question: Is it possible, using vector and symbols, ruled in the pillars and principles of Transdisciplinarity, looking for the creation of format
Publicado em: 2006
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19. Bacia hidrográfica urbanizada e degradação ambiental : o vale do rio Jaguaribe - João Pessoa (PB)
Intending to be provided with a living, human beings have simultaneously produced not only their history, knowledge, political and social structure, but also the space where they live. On building up their space, individuals have caused serious alterations in nature, which can be noticed throughout the history of human settlements. The new points about them
Publicado em: 2005
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20. Atividade de Culicidae em remanescente florestal na região urbana de Curitiba (Paraná, Brasil)
Vegetation islands inside urban area can propitiate the formation of: a) adults refuge to many mosquitoes species, b) diversity of hosters, c) allows the proliferation of immature stages through naturals and artificial breeding, these ones were done by the interaction between antropic activity developed in these spaces or around areas. Considering the possib
Revista Brasileira de Zoologia. Publicado em: 2003-03
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21. Geometria não-comutativa e o modelo de Connes-Lott
In this dissertation we studied how to generalize in an algebraic way some of the concepts of classical differential geometry (like the concepts of manifolds and vector bundles). Moreover, we developed the integral and differential calculus over these algebraic structures. These concepts are the basis of the noncom mutative geometry, which enabled us to stud
Publicado em: 2003
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22. On Zeta Functions Associated with Prehomogeneous Vector Spaces
In this note, we construct certain families of Dirichlet series that satisfy functional equations. We shall also indicate an arithmetical application of our results. The work presented here depends upon the theory of prehomogeneous vector spaces.
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23. TOPOLOGICAL VECTOR SPACES OF CONTINUOUS FUNCTIONS*
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24. THE STRONG MINKOWSKI FARKAS-WEYL THEOREM FOR VECTOR SPACES OVER ORDERED FIELDS*