Listar Matemática por título
Mostrando ítems 53-72 de 232
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Connes' noncommutative differential geometry and the Standard Model
(1993-11)In this paper, the Connes-Lott approach to the phenomenological Lagrangian of the standard theory of elementary particles is reviewed in detail. The paper is self-contained, in that the necessary foundations in noncommutative ... -
Connes' tangent groupoid and strict quantization
(1999-12)We address one of the open problems in quantization theory recently listed by Rieffel. By developing in detail Connes' tangent groupoid principle and using previous work by Landsman, we show how to construct a strict flabby ... -
Contribuciones al estudio de las métricas en análisis de datos
(2012-10-25)Nos hemos planteado estudiar la dependencia de los resultados al cambiar las métricas para el mtodo de Análisis en Componentes Principales (A.C.P.). En efecto, para este análisis el problema de la escogencia de la distancia ... -
Contributions to the continuity problem for Lyapunov exponents
(2018)O objetivo deste trabalho é estudar a continuidade e a semi-continuidade dos expoentes de Lyapunov em dois contextos diferentes. O primeiro diz respeito a cociclos lineares sobre dinâmicas parcialmente hiperbólicas. É ... -
Correction to: The chirality theorem
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Dataducto para construir Emuladores Estadísticos con datos de NARCCAP
(2019-01-25)El proyecto de investigación B7166 de la Universidad de Costa Rica tiene como objetivo principal presentar un marco estadístico para realizar una emulación de variables obtenidas por medio del Modelo Climático Regional ... -
Definable Additive Subgroups of Partial Differential Fields of Characteristic Zero with an Automorphism
(2020-10-19)Abstract.The theory of partial differential fields of characteristic zero withan automorphism has a model companion denoted DCFmA. This theory isnot complete, but its completions are easily discribed. They are supersimpleand ... -
Dengue model with early-life stage of vectors and age-structure within host
(2019-12)We construct an epidemic model for the transmission of dengue fever with an early-life stage in the vector dynamics and age-structure within hosts. The early-life stage of the vector is modeled via a general function that ... -
Density functional theory on phase space
(2012)Forty-five years after the point de départ [Hohenberg and Kohn, Phys. Rev. 1964, B864, 136] of density functional theory, its applications in chemistry and the study of electronic structures keep steadily growing. However, ... -
Desarrollo y análisis del comportamiento humano adaptativo en modelos con relapso no lineal
(2023)En este proyecto proponemos estudiar las propiedades teóricas y nuevas aplicaciones de un algoritmo de formulación recuente para modelar las decisiones de contacto humanas en modelos epidemiológicos, que es llamado el ... -
Dilation of a non-quasifree dissipative evolution
(1981-03)A semigroup evolution for the 1/2-spin which admits a conservative dilation is known to be governed by a Bloch equation in a standard form. Here we construct a conservative dilation directly from the Bloch equation, thus ... -
Diseño de fórmulas integrales
(1992)Presentamos una nueva metodología de diseño de fórmulas integrales que no utiliza explícitamente sumas de Riemann ni procesos de límite. El método consiste en partir de un modelo elemental con solución conocida, e interpretar ... -
Distinguished Hamiltonian theorem for homogeneous symplectic manifolds
(1991-09)A diffeomorphism of a finite-dimensional flat symplectic manifold which is canonoid with respect to all linear and quadratic Hamiltonians preserves the symplectic structure up to a factor: so runs the "quadratic Hamiltonian ... -
Dixmier traces on noncompact isospectral deformations
(2006)We extend the isospectral deformations of Connes, Landi and Dubois-Violette to the case of Riemannian spin manifolds carrying a proper action of the noncompact abelian group R^l. Under deformation by a torus action, a ... -
Domain Decomposition Methods for Problems in H(curl)
(2015-05)Two domain decomposition methods for solving vector field problems posed in H(curl) and discretized with Nedelec finite elements are considered. These finite elements are conforming in H(curl). A two-level overlapping ... -
Drinking as an epidemic - a simple mathematical model with recovery and relapse
(2007)This chapter discusses a simple mathematical model of drinking lapse. Problem drinking is modeled as an acquired state - the result of frequent or intense interactions among individuals in three drinking states within a ... -
Elimination of quantifiers of a theory of real closed rings.
(2022-10-09)Let T* be the theory of lattice-ordered subrings, without minimal (non zero) idempontents, convex in von Neumann regular real closed rings that are divisible-proyectable and sc-regular. In this paper, a local divisibility ... -
La enseñanza de las matemáticas con un énfasis histórico
(1986)Se reconsidera el problema de cuánto y cómo integrar la historia de la matemática en el currículo de pregrado universitario en matemáticas. Se pasa revista a varias alternativas y se propone una en particular: el diseño ... -
Equilibrium states for maps isotopic to Anosov
(2021)In this work we address the problem of existence and uniqueness (finiteness) of ergodic equilibrium states for partially hyperbolic diffeomorphisms isotopic to Anosov on T4, with two-dimensional center foliation. To do so ...