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Uniform null-controllability for the one-dimensional heat equation with rapidly oscillating periodic density
ε-productos tensoriales y limites inductivos.
The approximation property of order p in locally convex spaces.
The dual and bidual of an echelon Köthe space.
Reflexivity of projective tensor products of echelon and coechelon Kothe spaces.
Caracterización de los sub-retículos K-complementados de un espacio escalonado de Kothe.
El producto tensorial (p-r-s)-proyectivo de espacios perfectos de Frechet-Montel.
Teoría de sistemas de infinitas ecuaciones lineales y programación semi-infinita.
Subespacios de un espacio escalonado de Köthe.
Projective degenerations of K3 surfaces, Gaussian maps and Fano threefolds.
Geometrical aspects of the Landau-Hall problem on the hiperbolic plane.
Se discuten algunos aspectos del problema de Landau-Hall hiperbólico. El álgebra de Lie de las simetrías infinitesimales de este problema se da explícitamente, resultando ser isomorfa a so(2,1) y que sus invariantes Noether asociados son los momentos angulares hiperbólicos. Asimismo se desarrolla la formulación hamiltoniana, lo que nos permitirá obtener la variedad de órbitas de energía constante de este problema mediante técnicas de reducción simpléctica.
Aplicaciones del Álgebra de Boole métrica a la Teoría de la Medida.
On the first secondary invariant of Molino's central sheaf
For a Riemannian foliation on a closed manifold, the first secondary invariant of Molino's central sheaf is an obstruction to tautness. Another obstruction is the class defined by the basic component of the mean curvature with respect to some metric. Both obstructions are proved to be the same up to a constant, and other geometric properties are also proved to be equivalent to tautness.
A type of non-equivalent pseudogroups. Application to foliations
A topological result for non-Hausdorff spaces is proved and used to obtain a non-equivalence theorem for pseudogroups of local transformations. This theorem is applied to the holonomy pseudogroup of foliations.
On riemannian foliations with minimal leaves
For a Riemannian foliation, the topology of the corresponding spectral sequence is used to characterize the existence of a bundle-like metric such that the leaves are minimal submanifolds. When the codimension is , a simple characterization of this geometrical property is proved.
Espacios de funciones holomorfas con desarrollo asintótico.
Desarrollos asintóticos a través de compactos angulares.
A note on natural tensor products containing complemented copies of
Kaplansky classes
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