Analyticity
Mostrando 1-10 de 10 artigos, teses e dissertações.
-
1. Interação entre genes no modelo de spins e bósons / Gene interactions in the spin-boson model
Several functional modules in cells or bacteria are controlled by genes that regulate each other by coding repressive or inducer proteins. The understanding of these genetic networks is still an open problem in biology. In this work we apply the stochastic spin-boson model to the simplest interacting network, made of two genes, the first repressing the secon
Publicado em: 2011
-
2. Analytical, empirical and phenomenological aspects of elastic hadron scattering at high energies / Aspectos analiticos, empiricos e fenomenologicos do espalhamento elastico de hadrons em altas energias
We investigate high-energy elastic hadron scattering by means of three different approaches: analytical, empirical, and phenomenological. The first one is characterized by the fundamental principles of analyticity and crossing symmetry, polynomial limits for the scattering amplitude and dispersion relations. In special, for classes of functions of physical i
Publicado em: 2009
-
3. Phenomenological analysis of proton-proton and antiproton-proton elastic scattering at high energies / Analise fenomenologica dos espalhamentos elasticos proton-proton e antiproton-proton em altas energias
We present a study on proton-proton (pp) and antiproton-proton (¯pp) elastic scattering at high energies, with focus on the behavior of the total cross section, differential cross section and the parameter p (ratio between the real and the imaginary parts of the forward amplitude). These quantities are described by means of a model independent parametrizati
Publicado em: 2007
-
4. PRINCÍPIO DE HUME: POSSIBILIDADE DE UMA FILOSOFIA (NEO) FREGEANA DA ARITMÉTICA? / HUMENULLS PRINCIPLE: POSSIBILITY OF A (NEO) FREGEAN PHILOSOPHY OF ARITHMETIC?
A dissertação apresenta e discute as idéias desenvolvidas por Crispin Wright no livro Frege´s Conception of Numbers as Objects (1983), em particular, a sua tese de que a aritmética é analítica. Wright deposita toda sua força argumentativa (em relação à analiticidade da aritmética) na derivação dos axiomas da aritmética de segunda ordem de Dede
Publicado em: 2004
-
5. High-energy proton-proton forward scattering and derivative analyticity relations
We present the results of several parametrizations to two different ensemble of data on pp total cross sections (s) at the highest center-of-mass energies (including cosmic-ray information). The results are statistically consistent with two distinct scenarios at high energies. From one
Brazilian Journal of Physics. Publicado em: 2001-12
-
6. Fundamentos logico-epistemologicos da aritmetica
Taking as starting point a logico-epistemological analysis of Frege s notion of analyticity, and a (re)definition of this notion in model-theoretic terms, I offer a neo-logicisl approach to the foundations of arithmetic. This logico-reductionist approach consists in the formal derivation of the axioms of General Set Theory (which is the semantic framework fo
Publicado em: 2000
-
7. Expansão em cumulantes para o Modelo de Anderson Periodico
The diagrammatic expansion in cumulants that was employed by Hubbard to study his model of a narrow band of strongly correlated electrons was extended to the Periodic Anderson Model (PAM). The model was also extended by considering localized electronic states with an arbitrary scheme of energy levels: this extension would be useful to study intermediate vale
Publicado em: 1994
-
8. Complex-analyticity of harmonic maps and strong rigidity of compact Kähler manifolds
A harmonic map f between two compact Kähler manifolds is shown to be either holomorphic or conjugate holomorphic under a suitable negativity condition on the curvature of the image manifold and a condition on the rank of df. As a consequence, a compact Kähler manifold of dimension ≥2 that is of the same homotopy type as a compact Kähler manifold with su
-
9. Some Thermodynamic Relations at the Critical Point in Liquid-Vapor Systems
The relation of the symmetry of the thermodynamic functions with respect to the critical density ρc to the analyticity of the chemical potential above the critical temperature is discussed with the aid of thermo-dynamic considerations. Special consideration is given to the differential coefficients ([unk]2μ/[unk]T2)ρ and ([unk]2P/[unk]T2)ρ. The discussio
-
10. Two functional equations preserving functional forms
Two functional equations are considered that are motivated by three considerations: work in utility theory and psychophysics, questions concerning when pairs of degree 1 homogeneous functions can be homomorphic and calculating their homomorphisms, and the link of the latter questions to quasilinear mean values. The first equation is \documentclass[12pt]{mini
National Academy of Sciences.