Topological Group
Mostrando 1-12 de 39 artigos, teses e dissertações.
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1. RING CURRENT IN ANTHRACENE AND PHENANTHRENE: CORRECTION TO HÜCKEL PARAMETERS
Excessive degeneracy in the ground state of the π-electron energy levels of anthracene was removed using the Hückel method by correcting the Coulomb integral of the four central carbon atoms. A further correction to the resonance integral was proposed based on the ring-current model, which describes the π-ring current flow along the molecule’s perimeter
Química Nova. Publicado em: 2022
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2. Synthesis and Molecular Modeling Study of Two Bromo-Dimethoxybenzaldehydes
This work describes the synthesis, molecular structure, and packaging of the compounds 6-bromo-2,3-dimethoxybenzaldehyde (6-BRB) and 5-bromo-2,3-dimethoxybenzaldehyde (5 BRB). Characterization in the solid-state was carried out by X-ray diffraction, and the analysis of the interactions was described by the Hirshfeld surface, which helps in understanding the
Journal of the Brazilian Chemical Society. Publicado em: 2022
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3. On topological groups with an approximate fixed point property
Abstract A topological group G has the Approximate Fixed Point (AFP) property on a bounded convex subset C of a locally convex space if every continuous affine action of G on C admits a net ( x i ), x i ∈ C, such that x i - g x i ⟶ 0 for all g ∈ G. In this work, we study the relationship between this property and amenability.
An. Acad. Bras. Ciênc.. Publicado em: 2017-03
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4. Completamentos Pro-p de grupos de dualidade de Poincaré / Pro-p completions of Poincaré duality groups
In this work we give in the Main Theorems suffiient conditions for that the pro- p completion of an abstract orientable PDn group to be virtually a pro-p PDs group for some s ? n - 2 with n ? 4. This result is a generalization of the Theorem 3 in [K-2009]. Our proof is based on [K-2009] and on the results of A. A. Korenev [Ko-2004] and [Ko-2005]. Furthermore
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/08/2012
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5. A new approach for data transmission system on topological surfaces
This work introduces a new data transmission system in which the main blocks, coding, modulation and channel are designed on a Riemannian manifolds. An intrinsic algebraic structure to the manifolds (surface), the homology group will be used to compose an error corrector code, a partition on the surface extracted from the embedding of a graph, which will com
Computational & Applied Mathematics. Publicado em: 2012
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6. Topologias de grupo enumeravelmente compactas: MA, forcing e ultrafiltros seletivos / Countably compact group topologies: MA, forcing and selective ultrafilters
É bem conhecido o fato de que todo grupo compacto tem sequências não triviais convergentes. A existência de grupos enumeravelmente compactos sem sequências não triviais convergentes, foi provada usando axiomas adicionais à axiomática usual ZFC: A. Hajnal e I. Juhász sob CH, E. K. van Douwen sob MA, A. H. Tomita sob MA(sigma-centrada) e R.E. Madariag
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/11/2011
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7. Countably compact group topologies on non-torsion abelian groups from selective ultrafilters / Topologias enumeravelmente compactas em grupos abelianos de não torção via ultrafiltros seletivos
Assuming the existence of $\\mathfrak c$ pairwise incomparable selective ultrafilters (according to the Rudin-Keisler ordering) we prove that the free abelian group of cardinality $\\mathfrak c$ admits a countably compact group topology that contains a non-trivial convergent sequence. Under the same hypothesis, we show that an abelian almost torsion-free top
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/03/2011
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8. Construction of topological quantum codes on bidimensional manifolds / Analise e construção de codigos quanticos topologicos sobre variedades bidimensionais
In this work we present an extensive study of topological quantum codes. As a consequence, new promising ideas, concepts and results are also presented. First of all, new toric quantum codes are constructed among which the [[d2,2,d]] class stands out as the best known so far. This proposed construction of toric codes is realized based upon group theory and c
Publicado em: 2009
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9. A organização da prática educativa em geometria: Contribuições da teoria piagetiana
This research sought to establish inter-relations between the results of the studies of the Piaget and Inhelder to the perception and representation of space and the process of teaching of geometry; identify as children establish the spatial relationships of topological nature, and projective Euclidian and highlight the contributions of those studies. Theref
Publicado em: 2008
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10. Tuberculose: estudo da formaÃÃo de padrÃes na eliminaÃÃo, contenÃÃo e disseminaÃÃo do bacilo de Koch
Tuberculosis (TB) is an endemic disease caused by an aerobic bacterium named Mycobacterium tuberculosis (Mtb). It is responsible for on third of population infected worldwide and it causes 2.2 millions deaths per year. The most common infection by Mtb occurs by inhalation of microorganisms into the lungs, where they infect mainly alveolar macrophages. The in
Publicado em: 2007
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11. Redes e políticas públicas: tecendo uma perspectiva analítico-institucional / Public policies and webs: weaving an analytical-institutional perspective
This thesis addresses the theme of networks, situating it in the field of Psychology as a conception that has been largely used in the formulation of public policies on mental health and on childhood and adolescence. The human being subjectivizes himself/herself having as a reference all those things and people with which they establish an association. In th
Publicado em: 2006
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12. Communication and meaning: the material in the fine arts / Comunicação e Sentido:a matéria nas artes plasticas
This study is based on the presumption that the production, circulation and grasp of meaning should be the ultimate purpose of any communication theory that is able to conceive both the individual and the social as mutually built from exchanges of meanings where both aspects are involved with each other. It takes as its corpus a group of paintings and sculpt
Publicado em: 2005