Now showing items 1-10 of 90
A NOTE ON RESOLVENT CONVERGENCE ON A THIN DOMAIN
(Bulletin Of The Australian Mathematical Society, 2014-02-01) [Artigo]
In this paper we provide a new proof of strong convergence of resolvent operators associated with boundary value problems on thin domains.
A scalable re-ranking method for content-based image retrieval
(Information Sciences, 2014-05-01) [Artigo]
Content-based Image Retrieval (CBIR) systems consider only a pairwise analysis, i.e., they measure the similarity between pairs of images, ignoring the rich information encoded in the relations among several images. However, ...
Functions and vector fields on C(CPn)-singular manifolds
(Ukrainian Mathematical Journal, 2014-08-01) [Artigo]
Let M2n+1 be a C(CPn) -singular manifold. We study functions and vector fields with isolated singularities on M2n+1. A C(CPn) -singular manifold is obtained from a smooth manifold M2n+1 with boundary in the form of a ...
Measure Functional Differential Equations in the Space of Functions of Bounded Variation
(Abstract and Applied Analysis, 2013-01-01) [Artigo]
We establish general conditions for the unique solvability of nonlinear measure functional differential equations in terms of properties of suitable linear majorants.
Stability of the null solution of the equation ẋ(t) = -a(t)x(t) + b(t)x([t])
(International Journal of Pure and Applied Mathematics, 2010-12-10) [Artigo]
The asymptotic stability of the null solution of the equation ẋ(t) = -a(t)x(t)+b(t)x([t]) with argument [t], where [t] designates the greatest integer function, is studied by means of dichotomic maps. © 2010 Academic Publications.
Stability results for impulsive functional differential equations with infinite delay
(Nonlinear Analysis-theory Methods & Applications, 2012-12-01) [Artigo]
For a family of differential equations with infinitive delay and impulses, we establish conditions for the existence of global solutions and for the global asymptotic and global exponential stabilities of an equilibrium ...
Stable singularities of co-rank one quasi homogeneous map germs from (ℂn+1, 0) to (ℂn, 0), n = 2, 3
(JP Journal of Geometry and Topology, 2013-05-01) [Artigo]
In this article, we investigate the geometry of quasi homogeneous corank one finitely determined map germs from (ℂn+1, 0) to (ℂn, 0) with n = 2, 3. We give a complete description, in terms of the weights and degrees, of ...
A aprendizagem matemática em uma posição de fronteira: Foregrounds e intencionalidade de estudantes de uma favela brasileira
(Bolema - Mathematics Education Bulletin, 2012-04-01) [Artigo]
In a large metropolis, students from different neighbourhoods can experience very different life opportunities. This can influence their attitude towards schooling and learning, including the learning of mathematics. We ...
Dispositivo estratégico, resistência e relações de poder: um ensaio sobre a identidade do Centro de Educação Matemática (CEM) e seu papel na (E)educação (M)matemática brasileira
(Práxis Educativa, 2012) [Artigo]
This paper presents some results of the investigation on the Mathematical Education Centre (CEM), a group of mathematics teachers’ educators in São Paulo, Brazil, acting mainly between 1984 and 1997. The essay, marked by ...
Movimentos de Teorizações em Educação Matemática
(Bolema - Mathematics Education Bulletin, 2016-08-01) [Artigo]
In this essay, we show a discussion about a process of theorization in Mathematics Education. In the first part, by means of an interview textualization, we elaborated a theorization movement about mathematical preparation ...