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Modeling the university drinking culture phenomenon
(2022-11-03)
We study a susceptible-drinker-recovered (SDR) model for the drinking culture phenomenon in university atmospheres. We find conditions for this model to have extinction and endemic equilibrium points. We analyze different ...
Noncommutative geometry and quantization
(2000-06)
We examine some recent developments in noncommutative geometry, including spin geometries on noncommutative tori and their quantization by the Shale-Stinespring procedure, as well as the emergence of Hopf algebras as a ...
Una retrospección a la matemática griega
(2000-12-01)
Este artículo apareció originalmente en la revista cultural
semestral Laberintos, publicado por el Instituto de Enseñanza
Superior ÉLAIOS, de Zaragoza, en un número dedicado al Año Mundial
de las Matemáticas (2000). ...
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 ...
Una fundamentación instrumental de la Aritmética
(1990)
Desde el punto de vista de la génesis histórica y psicológica del conocimiento humano, poca duda cabe que los números naturales van siendo elaborados como referente social en el proceso de conteo. En este artículo se ...
Estrategias asociadas al uso de GeoGebra en un contexto de resolución de problemas
Strategies associated with the use of GeoGebra in a problem-solving context
Estratégias associadas ao uso do GeoGebra em um contexto de resolução de problemas
(2021-01-15)
Este artículo presenta una experiencia en aula de matemática cuyo objetivo fue analizar cómo el uso constante de un Sistema de Geometría Dinámica (SGD), GeoGebra, en un contexto de resolución de problemas, permitió a un ...
Algebras of distributions suitable for phase‐space quantum mechanics. I
(1988-06-04)
The twisted product of functions on R^2N is extended to a *-algebra of
tempered distributions which contains the rapidly decreasing smooth
functions, the distributions of compact support, and all polynomials,
and moreover ...
The Stratonovich-Weyl correspondence: A general approach to Wigner functions
(1989)
A formalism is proposed for developing phase-space representations of
elementary quantum systems under general invariance groups. Several
examples are discussed, including the usual Weyl calculus, the Moyal
formulation ...
The set of fiber-bunched cocycles with nonvanishing Lyapunov exponents over a partially hyperbolic map is open
(2018)
We prove that the set of fiber-bunched SL(2, R)-valued Hölder cocycles with nonvanishing Lyapunov exponents over a volume preserving, accessible and center-bunched partially hyperbolic diffeomorphism is open. Moreover, we ...
Testing one-body density functionals on a solvable model
(2012-10)
There are several physically motivated density matrix functionals in the literature, built from the knowledge of the natural orbitals and the occupation numbers of the one-body reduced density matrix. With the help of the ...