Listar Artículos (Álgebra) por título
Mostrando ítems 89-108 de 260
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Fast algorithmic Nielsen-Thurston classification of four-strand braids
(World Scientific Publishing, 2012-04)We give an algorithm which decides the Nielsen-Thurston type of a given four-strand braid. The complexity of our algorithm ...
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Fast Nielsen-Thurston classification of braids
(Mathematical Sciences Publishers, 2014)We prove the existence of an algorithm that solves the reducibility problem in braid groups and runs in quadratic time with respect to the braid length for any fixed braid index.
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Finite monodromy of some families of exponential sums
(Elsevier, 2019-04)Given a prime p and an integer d > 1, we give a numerical criterion to decide whether the ℓ-adic sheaf associated to the ...
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Fonctions zêta ℓ-modulaires
(Duke University Press, 2012)Soient F un corps commutatif localement compact non archimédien, de caractéristique résiduelle notée p, et D une F-algèbre ...
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Formal groups, supersingular abelian varieties and tame ramification
(Elsevier, 2011-05-15)Let us consider an abelian variety defined over Qℓ with good supersingular reduction. In this paper we give explicit ...
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Free divisors and duality for D-modules
(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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Galois Theory, discriminants and torsion subgroups of elliptic curves
(Elsevier, 2010-08)We find a tight relationship between the torsion subgroup and the image of the mod 2 Galois representation associated to ...
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Generating random braids
(Elsevier, 2013-01)We present an algorithm to generate positive braids of a given length as words in Artin generators with a uniform probability. ...
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Geometric approaches to braid groups and mapping class groups
(Cellule Mathdoc, 2015)These are Lecture Notes of a course given by the author at the School Winter Braids, held at the Université de Pau et des ...
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Geometric embeddings of braid groups do not merge conjugacy classes
(Sociedad Matemática Mexicana, 2014-10)An embedding of the m-times punctured disc into the n-times punctured disc, for n > m, yields an embedding of the braid ...
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Gevrey and formal Nilsson solutions of A-hypergeometric systems
(Elsevier, 2020-02-10)We prove that the space of Gevrey solutions of an A–hypergeometric system along a coordinate subspace is contained in a ...
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Gevrey expansions of hypergeometric integrals I
(Oxford University Press, 2015)We study integral representations of the Gevrey series solutions of irregular hypergeometric systems. In this paper we ...
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Gevrey Expansions of Hypergeometric Integrals II
(Oxford University Press, 2019-12-01)We study integral representations of the Gevrey series solutions of irregular hypergeometric systems under certain ...
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Gevrey solutions of irregular hypergeometric systems in two variables
(Elsevier, 2011-08-01)We describe the Gevrey series solutions at singular points of the irregular hypergeometric system (GKZ system) associated ...
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Gevrey solutions of the irregular hypergeometric system associated with an affine monomial curve
(American Mathematical Society, 2011)We describe the Gevrey series solutions at singular points of the irregular hypergeometric system (GKZ system) associated ...
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Godement resolutions and sheaf homotopy theory
(Springer, 2015-09)The Godement cosimplicial resolution is available for a wide range of categories of sheaves. In this paper we investigate ...
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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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Gröbner δ-bases and Gröbner bases for differential operators
(Polish Academy of Sciences, Institute of Mathematics, 2002)This paper deals with the notion of Gr¨obner δ-base for some rings of linear differential operators by adapting the works ...
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Hasse-Schmidt derivations and coefficient fields in positive characteristics
(Elsevier, 2003-07-01)We show how to express any Hasse-Schmidt derivation of an algebra in terms of a finite number of them under natural ...
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Hasse-Schmidt derivations, divided powers and differential smoothness
(Association des Annales de l'Institut Fourier, 2009)Let k be a commutative ring, A a commutative k-algebra and D the filtered ring of k-linear differential operators of A. ...