Index Theorem
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Opto-electronic Properties of Nano-electronic Materials
Nanoelectronic is nanotechnology applied in the context of electronic circuits and systems. Molecular electronic, which is supposed to replace silicon electronic in the future, is an incipient branch of Nanotechnology which focusing on the organic molecules. Since recognizing and examining this family of Nanostructures needs a long time and very expensive, a
Mat. Res.. Publicado em: 13/07/2017
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2. Computational Simulations of Morphological Transformations by Surface Structures: The Case of Rutile TiO2 phase
Computational simulations based on periodic density functional theory have been carried out to investigate the control of crystal morphology by accurate values of surface energies by Wulff theorem. This method can be used as a very useful tool for the design and knowledge of synthesis of new materials. In a special case, rutile TiO2 phase, exhibits great var
Mat. Res.. Publicado em: 10/04/2017
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3. Estudo da relação entre propriedades de compósitos de fricção aplicados a sistemas de freio a disco e a propensão à ocorrência de Squeal Noise
Automotive brake systems are very often susceptible to generate high frequency noise as a result of a self excited vibration. This phenomenon is generically nominated brake squeal noise and is the subject of many studies which intend to identify and describe its exciting mechanism and to propose counter measures to avoid its occurrence. One key subject yet t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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4. Teorema do Índice em Superfícies Curvas de Grafeno e Fases de Berry
O grafeno consiste em uma estrutura bidimensional hexagonal constituída apenas por átomos de carbono. Trata-se de uma molécula bastante peculiar, pois em baixas energias o seu hamiltoniano pode ser descrito pelo operador de Dirac e isso lhe confere características incomuns. Neste trabalho o teorema do índice será aplicado ao grafeno. Teorema que permit
Publicado em: 2010
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5. As ligações semirrígidas na análise avançada com zona plástica de portais planos de aço
In this work, the development of the Plastic-Zones Advanced Analysis of plane steel portals is studied, now including the connections effect. Firstly, this analysis is defined as inelastic second-order which capture the plasticity spread by slice technique and includes the Main Aspects as geometric (out-of-straight and out-of-plumb) and physical imperfection
Publicado em: 2010
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6. O teorema do índice para o círculo / The index theorem for the circle
We study the comparison algebra on the circle, we describe the Gelfand space of its quotient by the compacts and we give a formula to compute the index of its Fredholm operators. After that, we generalize the result to the matrices with entries in the comparison algebra and give an application to differential opperators in the circle.
Publicado em: 2008
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7. Nahm transform of Higgs bundless on Riemann surface of genus at least two / Transformada de Nahm de fibrados de Higgs sobre superficies de Riemann de genero ao menos dois
We construct the Nahm transform of a stable, degree-zero Higgs bundle on a Riemann surface of genus at least 2. Atiyah-Singer?s index theorem is the basic tool employed, along with a vanishing theorem which is due to the stability hypothesis. Our main result is that the transformed bundle is hyperholomorphic and without flat factors. This not only recovers t
Publicado em: 2006
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8. O Teorema do h-cobordismo e a conjectura generalizada de PoincarÃ
The work of the following way In the first chapter it is developed to a list definitions and theorems that we found but important on subjects such as Topology, Differential Manifolds and aspects of the Algebraic Topology, which will be used in the following chapters. We considered advisable to indicate the demonstrations of the theorems, thus, like commentar
Publicado em: 2005
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9. RENDALLNULLS THEOREMS AND THE UNIQUE DETERMINATION OF THE INNER PRODUCT IN REPRESENTATION OF ALGEBRAS / TEOREMAS DE RENDALL E A UNICIDADE DO PRODUTO INTERNO EM REPRESENTAÇÕES DE ÁLGEBRAS
This thesis is concerned with a paper from Alan D. Rendall named Unique determination of an inner product by adjointness relations in the algebra of quantum observables, in which is proved that given a *- representation of a *-algebra in a pre-Hilbert space V irreducible with regard to the inner product defined in V we can assure the uniqueness of the inner
Publicado em: 2004
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10. Conjugate points on a limiting extremal
Theorem 1, together with the author's extensions of the Sturmian Comparison Theorems, will suffice to establish the basic Theorem 27.3, p. 211 of Global Variational Analysis: Weierstrass Integrals on a Riemannian Manifold. Mathematical Notes, Princeton University Press, Princeton, N.J., 1976. Here and in the preceding reference there is given a Weierstrass I
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11. The structure of Selmer groups
The purpose of this article is to describe certain results and conjectures concerning the structure of Galois cohomology groups and Selmer groups, especially for abelian varieties. These results are analogues of a classical theorem of Iwasawa. We formulate a very general version of the Weak Leopoldt Conjecture. One consequence of this conjecture is the
The National Academy of Sciences of the USA.
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12. Subordinate Quadratic Forms and Their Complementary Forms
Theorem 1. For α, β on the range 1,..., μ, let Q(z) = *aαβzαzβ be a real valued, nonsingular, symmetric quadratic form. For positive integers r and s such that μ = r + s set (z1,..., zμ) = (u1,..., ur:S1,..., Sn), Q(z) = P(u, s) and [Formula: see text] Let B = (z(1),..., z(r)) be a base “over R” for points z ε πr. For an arbitrary r-tuple ω1,