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RADICAL EXTENSIONS AND CROSSED HOMOMORPHISMS
(2001)
If Q./F is a Galois extension with Galois group G and /x(fi) denotes the group of roots of unity in Q, we use the group Z1{G,fi(Q)) of crossed homomorphisms to study radical extensions inside Q. Furthermore, we characterise ...
International Journal of Pure and Applied Mathematics
(2008)
I.M. Isaacs has proven a very interesting theorem concerning solvability of polynomials by real radicals. His result deals with an irreducible polynomial over the field of rational numbers which has a real radical element ...
FORMULANDO CONJETURAS MATEMÁTICAS EN ACTIVIDADES DE APRENDIZAJE ASISTIDAS CON TECNOLOGÍA
(2008)
¿Qué tipo de actividades deberían incluir los programas de desarrollo profesional para revisar y ampliar los conocimientos matemáticos y pedagógicos de los profesores de bachillerato? Proponemos una ruta para involucrar a ...
FÓRMULAS DE TIPO-WEYL PARA DOMINIOS EXTERIORES
(2003)
Se presenta un recuento histórico de comportamientos asintóticos de tipo-Weyl para dominios exteriores
Eigenfunction expansions and spectral projections for isotropic elasticity outside an obstacle
(2004)
We consider the operator ??? grad div acting on an exterior domain ? in Rn (with? >0 and n = 2, 3) subject to Dirichlet boundary conditions. The spectral resolution for the operator is written in terms of an expansion of ...
HIGH SCHOOL TEACHERS COGNITIVE SCHEMES SHOWN IN PROBLEM SOLVING APPROACHES BASED ON THE USE OF TECHNOLOGY
(2007)
This study documents the type of proof schemes that high school teachers developed and used in problem solving scenarios that involve the use of dynamic software (Cabri-Geometry). Research questions that helped organize ...
Estudio experimental de la viscosidad de un fluido magneto-reológico a base de magnetita mineral
(2007)
Estudiamos experimentalmente la viscosidad de un fluido magneto-reológico (MR) a base de magnetita mineral y aceite automotriz parafrenos. Usamos un reómetro Brookfield de geometrÃa cono-plato al cual se le adapt´o un ...
La irradiacion en los alimentos
(2008)
La irradiación de alimentos es un método de conservación y esterilización, consistente en exponer el producto a la acción de las radiaciones ionizantes durante un tiempo determinado. Esta radiación es producida por elementos ...