31 research outputs found
Symmetrization process and truncated orthogonal polynomials
We define the family of truncated Laguerre polynomials , orthogonal
with respect to the linear functional defined by
The connection between and the polynomials (obtained
through the symmetrization process) constitutes a key element in our analysis.
As a consequence, several properties of the polynomials and
are studied taking into account the relation between the parameters
of the three-term recurrence relations that they satisfy. Asymptotic expansions
of these coefficients are given. Discrete Painlev\'e and Painlev\'e equations
associated with such coefficients appear in a natural way. An electrostatic
interpretation of the zeros of such polynomials as well as the dynamics of the
zeros in terms of the parameter are given
Matrix Toda and Volterra lattices
We consider matrix Toda and Volterra lattice equations and their relation with matrix biorthogonal polynomials. From that relation, we give a method for constructing a new solution of these systems from another given one. An illustrative example is presented.publishe
Shortened Version of the Token Test: Normative data for Spanish-speaking pediatric population
Stroop Color-Word Interference Test: Normative data for Spanish-speaking pediatric population
Newly developed Learning and Verbal Memory Test (TAMV-I): Normative data for Spanish-speaking pediatric population
Rey–Osterrieth Complex Figure – copy and immediate recall (3 minutes): Normative data for Spanish-speaking pediatric populations
Gangliosidosis GM1: About a Clinical Case
La gangliosidosis GM1 es una enfermedad de depósito lisosomal en la cual se acumula gangliósido-GM1 y otros compuestos galactoconjugados. La enfermedad es secundaria a la deficiencia de β-galactosidasa, con una afectación multiorgánica, en que predominan las manifestaciones neurológicas progresivas y visceromegalias. Se describe el caso de un niño de 5 años de edad, quien presenta un cuadro de regresión global del neurodesarrollo. Por hallazgos clínicos, de laboratorio y neuroimágenes, se le diagnostica gangliosidosis GM1 tipo 2 o juvenil.Gangliosidoses GM1 is a lysosomal storage disease where accumulates ganglioside-GM1 and other compounds galacto-conjugates. The disease is secondary to beta-galactosidase deficiency; it has multiple organ compromise, with progressive neurologic manifestations and visceromegalies. This work describes 5-year-old girl, with a picture of overall regression of neurodevelopment; diagnosed by clinical findings, neuroimaging and laboratory, as GM1 Gangliosidosis type 2 or juvenile
Gangliosidosis G M1 : a propósito de un caso clínico
La gangliosidosis G M1 es una enfermedad de depósito lisosomal en la cual se acumula gangliósido-G M1 y otros compuestos galactoconjugados. La enfermedad es secundaria a la deficiencia de β -galactosidasa, con una afectación multiorgánica, en que predominan las manifestaciones neurológicas progresivas y visceromegalias. Se describe el caso de un niño de 5 años de edad, quien presenta un cuadro de regresión global del neurodesarrollo. Por hallazgos clínicos, de laboratorio y neuroimágenes, se le diagnostica gangliosidosis G M1 tipo 2 o juvenil