Listar Artículos (Álgebra) por título
Mostrando ítems 178-197 de 260
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On the rank of an A-hypergeometric D-module versus the normalized volume of A
(Wiley, 2022-03-06)The rank of an A-hypergeometric D-module MA(β), associated with a full rank (d×n)-matrix A and a vector of parameters β∈Cd, ...
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On the reduced Bernstein-Sato polynomial of Thom-Sebastiani singularities
(Springer Nature, 2023-08-10)Given two holomorphic functions f and g defined in two respective germs of complex analytic manifolds (X, x) and (Y, y), ...
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On the singular braid monoid of an orientable surface
(American Mathematical Society, 2004)In this paper we show that the singular braid monoid of an orientable surface can be embedded in a group. The proof is purely topological, making no use of the monoid presentation.
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On the Sn-module structure of the noncommutative harmonics
(Elsevier, 2008-08)Using the a noncommutative version of Chevalley’s theorem due to Bergeron, Reutenauer, Rosas, and Zabrocki we compute the ...
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On the structure of the centralizer of a braid
(Elsevier, 2004)The mixed braid groups are the subgroups of Artin braid groups whose elements preserve a given partition of the base ...
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On the ubiquity of trivial torsion on elliptic curves
(Springer, 2010-08)The purpose of this paper is to give a down-to-earth proof of the well–known fact that a randomly chosen elliptic curve over the rationals is most likely to have trivial torsion.
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On the unit of a monoidal model category
(Elsevier, 2015-08-15)In this paper we show how to modify cofibrations in a monoidal model category so that the tensor unit becomes cofibrant ...
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Ordering pure braid groups on compact, connected surfaces
(University of California, 2002-04)We prove that the pure braid groups on compact, connected, orientable surfaces are bi-orderable, and that the pure braid groups on compact, connected non-orientable surfaces have generalized torsion, thus they are not bi-orderable.
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Parabolic subgroups acting on the additional length graph
(Geometric & Topology Publications, 2021-08-18)Let A ≠ A 1 , A 2 , I 2 m be an irreducible Artin–Tits group of spherical type. We show that the periodic ...
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Parabolic subgroups of large-type Artin groups
(Cambridge University Press, 2022-09-12)We show that the geometric realisation of the poset of proper parabolic subgroups of a large-type Artin group has a systolic ...
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Partial symmetries of iterated plethysms
(Springer, 2023-05-03)This work highlights the existence of partial symmetries in large families of iterated plethystic coefficients. The ...
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Pierre Deligne
(Real Sociedad Matemática Española, 2013) -
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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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Polynomial braid combing
(Oxford University Press, 2018)We prove that, for n ≥ 3, the minimal dimension of a model of the classifying space of the braid group Bn, and of the pure braid group Pn, with respect to the family of virtually cyclic groups is n.
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Presentations for the monoids of singular braids on closed surfaces
(Taylor & Francis, 2002)We give presentations, in terms of generators and relations, for the monoids SBn(M) of singular braids on closed surfaces. ...
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Primer Encuentro Conjunto RSME-UMA, Buenos Aires, 11 a 15 de diciembre de 2017
(Real Sociedad Matemática Española, 2018)En la semana del lunes 11 al viernes 15 de diciembre de 2017 se llevó a cabo en Buenos Aires el Primer Encuentro Conjunto ...
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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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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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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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Rationality of trace and norm L-functions
(Duke University Press, 2012-06-15)For a given l-adic sheaf F on a commutative algebraic group G over a finite field k and an integer r ≥ 1 we define the ...