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Listar Algebra por autor "Ucha Enríquez, José María"
Mostrando ítems 1-12 de 12
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Artículo
A computational approach to the D-module of meromorphic functions
Castro Jiménez, Francisco Jesús; Ucha Enríquez, José María (2001)Let D be a divisor in Cn. We present methods to compare the D-module of the meromorphic functions O[∗D] to some natural approximations. We show how the analytic case can be treated with computations in the Weyl algebra.
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Capítulo de Libro
Algorithmic Invariants for Alexander Modules
Gago Vargas, Manuel Jesús; Hartillo Hermoso, Isabel; Ucha Enríquez, José María (2006)Let $G$ be a group given by generators and relations. It is possible to compute a presentation matrix of a module over a ...
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Artículo
An algebraic approach to Integer Portfolio problems
Castro Jiménez, Francisco Jesús; Gago Vargas, Manuel Jesús; Hartillo Hermoso, Isabel; Puerto Albandoz, Justo; Ucha Enríquez, José María (2011-05-01)Integer variables allow the treatment of some portfolio optimization problems in a more realistic way and introduce the ...
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Artículo
An improved test set approach to nonlinear integer problems with applications to engineering design
Gago Vargas, Manuel Jesús; Hartillo Hermoso, Isabel; Puerto Albandoz, Justo; Ucha Enríquez, José María (Springer, 2015-11)Many problems in engineering design involve the use of nonlinearities and some integer variables. Methods based on test ...
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Artículo
Comparison of theoretical complexities of two methods for computing annihilating ideals of polynomials
Gago Vargas, Manuel Jesús; Hartillo Hermoso, Isabel; Ucha Enríquez, José María (2005)Let f1, . . . , fp be polynomials in C[x1, . . . , xn] and let D = Dn be the n-th Weyl algebra. We provide upper bounds ...
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Artículo
Exact cost minimization of a series-parallel reliable system with multiple component choices using an algebraic method
Gago Vargas, Manuel Jesús; Hartillo Hermoso, Isabel; Puerto Albandoz, Justo; Ucha Enríquez, José María (2013-11)The redundancy allocation problem is formulated minimizing the design cost for a series-parallel system with multiple ...
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Artículo
Free divisors and duality for D-modules
Castro Jiménez, Francisco Jesús; Ucha Enríquez, José María (Pleiades, 2002)The relationship between D-modules and free divisors has been studied in a general setting by L. Narváez and F.J. Calderón. ...
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Artículo
Localization at hyperplane arrangements: combinatorics and D-modules
Álvarez Montaner, Josep; Castro Jiménez, Francisco Jesús; Ucha Enríquez, José María (Elsevier, 2007-10-15)We describe an algorithm deciding if the annihilating ideal of the meromorphic function 1 f , where f = 0 defines an ...
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Tesis Doctoral
Métodos constructivos en álgebras de operadores diferenciales
Ucha Enríquez, José María (1999) -
Capítulo de Libro
Nouvelle Cuisine for the Computation of the Annihilating Ideal of $f^s$
Gago Vargas, Manuel Jesús; Hartillo Hermoso, Isabel; Ucha Enríquez, José María (2005)Let $f_1,\ldots, f_p$ be polynomials in ${\bf C}[x_1,\ldots, x_n]$ and let $D = D_n$ be the $n$-th Weyl algebra. The ...
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Capítulo de Libro
Sudokus and Gröbner Bases: not only a Divertimento
Gago Vargas, Manuel Jesús; Hartillo Hermoso, Isabel; Martín Morales, Jorge; Ucha Enríquez, José María (2006)Sudoku is a logic-based placement puzzle. We recall how to translate this puzzle into a 9-colouring problem which ...
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Ponencia
The Chemist's Cabinet Puzzle: a polynomial approach
Gago Vargas, Manuel Jesús; Hartillo Hermoso, Isabel; Ucha Enríquez, José María (Universidad de Granada. Departamento de Álgebra, 2008-09)Realizamos un análisis del juego conocido por el herbolario. Se modeliza su solución mediante un sistema polinómico, y deducimos el número de soluciones a partir de herramientas de Álgebra Conmutativa.