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On summability of distributions and spectral geometry
(1998-01)
Modulo the moment asymptotic expansion, the Cesàro and parametric behaviours of distributions at infinity are equivalent. On the strength of this result, we construct the asymptotic analysis for spectral densities arising ...
Analysis of a semi-augmented mixed finite element method for double-diffusive natural convection in porous media
(2022-05-15)
In this paper we study a stationary double-diffusive natural convection problem in porous media given by a Navier-Stokes/Brinkman type system, for describing the velocity and the pressure, coupled to a vector advection-diffusion ...
Estructuras de orden para aplicaciones matriciales
(1984-07)
Si M(n) es el espacio de matrices n x n complejas, hay varias
estructuras de orden en End(M(n)), el espacio de sus endomorfismos.
Hay nociones de positividad, positividad fuerte y positividad
completa, que son en general ...
The role of mobility and sanitary measures on the delay of community transmission of COVID-19 in Costa Rica
(2021-07-21)
The aim of this paper is to infer the effects that change on human mobility had on the transmission dynamics during the first four months of the SARS-CoV-2 pandemic in Costa Rica, which could have played a role in delaying ...
The pseudo-fundamental group scheme
(2019)
Let X be any scheme defined over a Dedekind scheme S with a given section x ∈ X (S). We prove the existence of a pro-finite S-group scheme א (X,x) and a universal א (X,x)-torsor dominating all the pro-finite pointed torsors ...
Wavelet analysis of dengue incidence and its correlation with weather and vegetation variables in Costa Rica
(2021)
Dengue represents a serious public health problem in tropical and subtropical regions worldwide. The number of dengue cases and its geographical expansion has increased in recent decades, driven mostly after by social and ...
A BDDC algorithm with deluxe scaling for H(curl) in two dimensions with irregular subdomains
(2015)
A bound is obtained for the condition number of a BDDC algorithm for problems posed in H(curl) in two dimensions, where the subdomains are only assumed to be uniform in the sense of Peter Jones. For the primal variable ...
Clifford Geometry: a Seminar
(1995-12-15)
Este documento fue desarrollado durante el seminario de posgrado SP--1313 (Seminario en Matemática A) en 1995; por razones de difusión, fue redactado en inglés. Se trata de una exposición de los aspectos de la geometría ...
The lowest excited configuration of harmonium
(2012)
The harmonium model has long been regarded as an exactly solvable laboratory bench for quantum chemistry [W. Heisenberg, Z. Phys. 38, 411 (1926)]. For studying correlation energy, only the ground state of the system has ...
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 ...