Ergodicity
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Incerteza e não ergodicidade: crítica aos neoclássicos
The starting point of this essay is to show that, in our view, the problem of the traditional economics is not in the deductive method nor the mathematical methods used, but to attribute to economic agents "power" on the future and prescribe the existence of ergodic stochastic processes in their economic analyzes. Thus, building a theory on the ground whose
Brazil. J. Polit. Econ.. Publicado em: 2014-06
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2. Ergodicidade e homeomorfismos anulares do toro / Ergodicity and annular homeomorphism of the torus
Seja f : T2 ->T2 um homeomorfismo homotópico a identidade e F : R2 ->R2 um levantamento de f tal que seu conjunto de rotação rho(F) é um segmento vertical não degenerado contido em 0 × R. Provamos que se f é ergódico com respeito a medida de Lebesgue no toro e se o vetor de rotação médio (com respeito a mesma medida) é da forma (0, alpha) para al
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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3. Estimadores do tipo núcleo para a densidade de transição de uma cadeia de markov com espaço de estados geral
In this work, we studied the strong consistency for a class of estimates for a transition density of a Markov chain with general state space E Rd. The strong ergodicity of the estimates for the density transition is obtained from the strong consistency of the kernel estimates for both the marginal density p(:) of the chain and the joint density q(:; :). In t
Publicado em: 2010
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4. Nonadditive entropy and nonextensive statistical mechanics -an overview after 20 years
Statistical mechanics constitutes one of the pillars of contemporary physics. Recognized as such - together with mechanics (classical, quantum, relativistic), electromagnetism and thermodynamics -, it is one of the mandatory theories studied at virtually all the intermediate-and advanced-level courses of physics around the world. As it normally happens with
Brazilian Journal of Physics. Publicado em: 2009-08
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5. ERGODICITY AND ROBUST TRANSITIVITY ON THE REAL LINE / TRANSITIVIDADE ROBUSTA E ERGODICIDADE DE APLICAÇÕES NA RETA
In the middle of the 19th century, G. Boole proved that the transformation x ->x ¿ 1/x, defined on R ¿ {0}, is a Lebesgue measure preserving transformation (Ble). Over one hundred years later, R. Adler and B.Weiss proved that this map, called Boole`s map, is, in fact, ergodic with respect to the Lebesgue measure (Adl). In this work, we present the notion o
Publicado em: 2007
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6. Estudo de Fractalidade e Evolução Dinâmica de Sistemas Complexos
In this work, the study of some complex systems is done with use of two distinct procedures. In the first part, we have studied the usage of Wavelet transform on analysis and characterization of (multi)fractal time series. We have test the reliability of Wavelet Transform Modulus Maxima method (WTMM) in respect to the multifractal formalism, trough the calcu
Publicado em: 2007
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7. Processos de partÃculas com comprimento variÃvel
Por muito tempo, foi (e ainda Ã) comum entre fÃsicos estatÃsticos acreditarem que transiÃÃes fÃsicas sà poderiam ocorrer em sistemas com dimensÃes maiores que um. Baseados nesta tradiÃÃo e em simulaÃÃes computacionais [1], vÃrios autores propuseram uma conjectura conhecida como âConjectura de taxas positivasâ, chamada aqui CTP, a qual defende
Publicado em: 2007
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8. Comparison among HB-inspired algorithms for continuous-spin systems and gauge fields
We propose a new local algorithm for the thermalization of n-vector spin models, which can also be used in the numerical simulation of SU(N) lattice gauge theories. The algorithm combines heat-bath (HB) and micro-canonical updates in a single step - as opposed to the hybrid overrelaxation method, which alternates between the two kinds of update steps - while
Brazilian Journal of Physics. Publicado em: 2006-09
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9. Dinâmica versus estática no programa de pesquisa pós-keynesiano
No primeiro capítulo, sublinhamos o fato de que na ciência econômica podem ser encontrados dois paradigmas distintos ligados à hipótese da ergodicidade e da não ergodicidade. Em termos estritos, a hipótese da ergodicidade refere-se à capacidade de previsão estatística. Porém de uma forma abrangente pode-se associar o conceito à natureza imutável
Publicado em: 2006
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10. Historicidade, entropia e não-linearidade: algumas aplicações possíveis na Ciência Econômica
The objective of this paper is to definite Historicity in Economic Sciences applying the principles of Entropy and methodological indeterminism. This implies the definition of two kinds of economic universes: one characterized by ergodicity and reversibility of Time and processes and the other by the opposite properties. The first part will deal with the con
Brazilian Journal of Political Economy. Publicado em: 2005-09
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11. Bilhares quanticos como modelo para um gas mesoscopico magnetizado
During the last years, mesoscopic systems have been attracting much interest in Theoretical Physics, due to the implementation of important theories in this field such as the semiclassical theory of periodic, classical, orbits. The recent progresses in experimental techniques, in semiconductor materials, showed that the manipulation of real systems with as f
Publicado em: 1998
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12. Kinetic theory and ergodic properties
It is often assumed that the justification of kinetic theory lies in ergodic theory. From the properties of the collision operator, which plays a basic role in our kinetic description of dynamical systems, we show that this is not the case. We deduce that the asymptotic behavior of a class of states and observables is determined by the collisional invariants