Listar Artículos (Álgebra) por título
Mostrando ítems 221-240 de 259
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Tame Galois realizations of GSp4 (Fℓ) over Q
(Oxford University Press, 2011)In this paper we obtain realizations of the 4-dimensional general symplectic group over a prime field of characteristic ...
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Tautological systems and free divisors
(Elsevier, 2019-08-20)We introduce tautological systems defined by prehomogeneous actions of reductive algebraic groups. If the complement of ...
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The 1-type of a Waldhausen K-theory spectrum
(Elsevier, 2007-12-01)We give a small functorial algebraic model for the 2-stage Postnikov section of the K-theory spectrum of a Waldhausen category and use our presentation to describe the multiplicative structure with respect to biexact functors.
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The algebra of secondary homotopy operations in ring spectra
(London Mathematical Society, 2011)The primary algebraic model of a ring spectrum R is the ring π∗R of homotopy groups. We introduce the secondary model π∗,∗R ...
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The analytic standard fan of a D-module
(Elsevier, 2001-10-24)We extend to the analytic D-module case our results in the algebraic case, namely, we associate with any monogeneous module ...
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The characteristic cohomology class of a triangulated category
(2005)The concept of a triangulated homotopy category can be canonically lifted to the level of a groupoid-enriched category. This way two natural axioms on track triangles replace the four somewhat obscure axioms of a triangulated category.
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The computation of the logarithmic cohomology for plane curves
(Elsevier, 2009-12-01)We will give algorithms of computing bases of logarithmic cohomology groups for square-free polynomials in two variables.
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The conjugacy stability problem for parabolic subgroups in artin groups
(Springer, 2022-09-14)Given an Artin group A and a parabolic subgroup P, we study if every two elements of P that are conjugate in A, are also ...
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The conservation relation for cuspidal representations
(Springer, 2012-01)Let π ∈ Cusp (U(Vn)) be a smooth cuspidal irreducible representation of a unitary group U(Vn) of dimension n over a ...
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The cyclic sliding operation in Garside groups
(Springer, 2010-05)We present a new operation to be performed on elements in a Garside group, called cyclic sliding, which is introduced to ...
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The defining ideals of conjugacy classes of nilpotent matrices and a conjecture of Weyman
(Oxford University Press, 2008)Tanisaki introduced generating sets for the defining ideals of the schematic intersections of the closure of conjugacy ...
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The Gröbner fan of an An-module
(Elsevier, 2000-06-14)Let I be a non-zero left ideal of the Weyl algebra An of order n over a field k and let L:R2n→R be a linear form defined ...
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The Kronecker product of Schur functions indexed by two-row shapes or hook shapes
(Springer, 2001-09)The Kronecker product of two Schur functions sµ and sν, denoted by sµ ∗ sν, is the Frobenius characteristic of the tensor ...
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The local duality theorem in D-module theory
(Société Mathématique de France, 2004)These notes are devoted to the Local Duality Theorem for D-modules, which asserts that the topological Grothendieck-Verdier ...
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The module Dfs for locally quasi-homogeneous free divisors
(Springer, 2002-10)We find explicit free resolutions for the D-modules Dfs and D[s]fs/D[s]f s+1, where f is a reduced equation of a locally ...
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The Newton Procedure for several variables
(Elsevier, 2011-07-15)Let us consider an equation of the form P(x, z) = zm + w1(x)zm−1 + · · · + wm−1(x)z + wm(x) = 0, where m>1, n>1, x=(x1⋯xn) ...
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The nth root of a braid is unique up to conjugacy
(Mathematical Sciences Publishers, 2003-11-01)We prove a conjecture due to Makanin: if α and β are elements of the Artin braid group Bn such that α k = β k for some nonzero integer k, then α and β are conjugate. The proof involves the Nielsen-Thurston classification of braids.
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The regularity of a toric variety
(Elsevier, 2001-03-01)We give a method for computing the degrees of the minimal syzygies of a toric variety by means of combinatorial techniques. ...
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The root extraction problem for generic braids
(MDPI, 2019-10)We show that, generically, finding the k-th root of a braid is very fast. More precisely, we provide an algorithm which, ...
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The stability of the Kronecker products of Schur functions
(Elsevier, 2011-04-01)In the late 1930’s Murnaghan discovered the existence of a stabilization phenomenon for the Kronecker product of Schur ...