Browsing Artículos (Álgebra) by Issue Date
Now showing items 61-80 of 260
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Article
Algebraic computation of some intersection D-modules
(Springer, 2006)Let X be a complex analytic manifold, D ⊂ X a locally quasi-homogeneous free divisor, E an integrable logarithmic connection ...
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Article
Grothendieck bialgebras, Partition lattices, and symmetric functions in noncommutative variables
(American Mathematical Society, 2006)We show that the Grothendieck bialgebra of the semi-tower of partition lattice algebras is isomorphic to the graded dual ...
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Chapter of Book
Algorithmic Invariants for Alexander Modules
(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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Chapter of Book
Sudokus and Gröbner Bases: not only a Divertimento
(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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Article
Symmetric functions in noncommuting variables
(American Mathematical Society, 2006)Consider the algebra Qhhx1, x2, . . .ii of formal power series in countably many noncommuting variables over the rationals. ...
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Article
Purity of exponential sums on An
(Kluwer, 2006-03)We give a purity result for two kinds of exponential sums of the type ∑x∈knψ(f(x)), where k is a finite field of characteristic ...
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Article
On the functoriality of cohomology of categories
(Elsevier, 2006-03)In this paper we show that the Baues-Wirsching complex used to define cohomology of categories is a 2-functor from a certain ...
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Article
Inequalities between Littlewood–Richardson coefficients
(Elsevier, 2006-05)We prove that a conjecture of Fomin, Fulton, Li, and Poon, associated to ordered pairs of partitions, holds for many ...
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Article
Moment zeta functions for toric Calabi-Yau hypersurfaces
(International Press, 2007)Moment zeta functions provide a diophantineformulation for the distribution of rational points on afamily of algebraic ...
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Article
Conjugacy in Garside groups I: Cyclings, powers, and rigidity
(European Mathematical Society, 2007)In this paper a relation between iterated cyclings and iterated powers of elements in a Garside group is shown. This yields ...
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Article
Resolutions of De Concini-Procesi ideals of hooks
(Taylor & Francis, 2007)We find a minimal generating set for the defining ideal of the schematic intersection of the set of diagonal matrices with ...
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Article
A flatness property for filtered D-modules
(European Mathematical Society, 2007)Let M be a coherent module over the ring DX of linear differential operators on an analytic manifold X and let Z1, · · · ...
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Article
Pilar Pisón Casares, in memoriam
(Real Sociedad Matematica Española, 2007)Estamos habituados a describir objetos matemáticos, a elaborar teorías, conjeturar resultados, demostrar asertos o refutar ...
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Article
Rank one discrete valuations of power series fields
(Taylor & Francis, 2007)In this paper we study rank one discrete valuations of the field k((X1, . . . , Xn)) whose center in k[[X1, . . . , Xn]] ...
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Article
Purity of exponential sums on An, II
(De Gruyer, 2007-03)We give a purity result for exponential sums of the type P x∈kn ψ(f(x)), where k is a finite field of characteristic p, ...
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Article
Hironaka's characteristic polygon and effective resolution of surfaces
(Elsevier, 2007-03-01)Hironaka’s concept of characteristic polyhedron of a singularity has been one of the most powerful and fruitful ideas of ...
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Article
Valuations in algebraic field extensions
(Elsevier, 2007-06-15)Let K → L be an algebraic field extension and ν a valuation of K. The purpose of this paper is to describe the totality ...
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Article
Computational methods in algebra and analysis
(Sociedad Española de Matemática Aplicada, 2007-09)This paper describes some applications of Computer Algebra to Algebraic Analysis also known as D-module theory, i.e. the ...
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Article
Localization at hyperplane arrangements: combinatorics and D-modules
(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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Article
Conjugacy in Garside Groups III: Periodic braids
(Elsevier, 2007-10-15)An element in Artin’s braid group Bn is said to be periodic if some power of it lies in the center of Bn. In this paper ...