Search Results - "MIGLIORE, Juan C"
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Monomial ideals, almost complete intersections and the Weak Lefschetz property
Published in Transactions of the American Mathematical Society (01-01-2011)“…Many algebras are expected to have the Weak Lefschetz property, although this is often very difficult to establish. We illustrate the subtlety of the problem…”
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On the strong Lefschetz problem for uniform powers of general linear forms in k[x,y,z]
Published in Proceedings of the American Mathematical Society (01-02-2018)“…weak Lefschetz property. Considering the more general of when \times L^j has maximal rank for j \geq 2, we give the first systematic study of this problem. We…”
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The Weak and Strong Lefschetz properties for Artinian K-algebras
Published in Journal of algebra (01-04-2003)“…Let A=⊕ i⩾0 A i be a standard graded Artinian K-algebra, where char K=0. Then A has the Weak Lefschetz property if there is an element ℓ of degree 1 such that…”
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An Improved Multiplicity Conjecture for Codimension 3 Gorenstein Algebras
Published in Communications in algebra (01-01-2008)“…The Multiplicity Conjecture is a deep problem relating the multiplicity (or degree) of a Cohen-Macaulay standard graded algebra with certain extremal graded…”
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A construction of codimension three arithmetically Gorenstein subschemes of projective space
Published in Transactions of the American Mathematical Society (01-09-1997)“…This paper presents a construction method for a class of codimension three arithmetically Gorenstein subschemes of projective space. These schemes are obtained…”
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Buchsbaum–Rim Sheaves and Their Multiple Sections
Published in Journal of algebra (01-09-1999)“…This paper begins by introducing and characterizing Buchsbaum–Rim sheaves on Z=ProjR, where R is a graded Gorenstein K-algebra. They are reflexive sheaves…”
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ON THE STRONG LEFSCHETZ PROBLEM FOR UNIFORM POWERS OF GENERAL LINEAR FORMS IN 𝑘[𝑥, 𝑦, 𝑧]
Published in Proceedings of the American Mathematical Society (01-02-2018)“…Schenck and Seceleanu proved that if 𝑅 = 𝑘[𝑥, 𝑦, 𝑧], where 𝑘 is an infinite field and 𝐼 is an ideal generated by any collection of powers of linear…”
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Reduced Gorenstein codimension three subschemes of projective space
Published in Proceedings of the American Mathematical Society (01-04-1997)“…It is known, from work of Diesel, which graded Betti numbers are possible for Artinian Gorenstein height three ideals. In this paper we show that any such set…”
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Some geometric results arising from the Borel fixed property
Published in Journal of pure and applied algebra (01-05-2007)“…In this paper, we will give some geometric results using generic initial ideals for the degree reverse lex order. The main goal of the paper is to improve on…”
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The Structure of an Even Liaison Class
Published in Transactions of the American Mathematical Society (1989)“…We describe a structure called the Lazarsfeld-Rao property for even liaison classes in projective space. This property holds for many even liaison classes of…”
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The weak Lefschetz property for artinian Gorenstein algebras of small Sperner number
Published 25-06-2024“…For artinian Gorenstein algebras in codimension four and higher, it is well known that the Weak Lefschetz Property (WLP) does not need to hold. For Gorenstein…”
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On the componentwise linearity and the minimal free resolution of a tetrahedral curve
Published in Journal of algebra (15-05-2006)“…A tetrahedral curve is an unmixed, usually nonreduced, one-dimensional subscheme of projective 3-space whose homogeneous ideal is the intersection of powers of…”
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Families of reduced zero-dimensional schemes
Published in Collectanea mathematica (Barcelona) (2006)“…A great deal of recent activity has centered on the question of whether, for a given Hilbert function, there can fail to be a unique minimum set of graded…”
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Ideals of general forms and the ubiquity of the Weak Lefschetz property
Published in Journal of pure and applied algebra (01-07-2003)“…Let d 1,…, d r be positive integers and let I=( F 1,…, F r ) be an ideal generated by forms of degrees d 1,…, d r , respectively, in a polynomial ring R with n…”
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Minimal resolution of relatively compressed level algebras
Published in Journal of algebra (01-02-2005)“…A relatively compressed algebra with given socle degrees is an Artinian quotient A of a given graded algebra R / c , whose Hilbert function is maximal among…”
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Green's theorem and Gorenstein sequences
Published 15-09-2016“…We study consequences, for a standard graded algebra, of extremal behavior in Green's Hyperplane Restriction Theorem. First, we extend his Theorem 4 from the…”
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On the minimal free resolution of n+1 general forms
Published in Transactions of the American Mathematical Society (01-01-2003)“…Let R = k[x_1,\dots,x_n] and let I be the ideal of n+1 generically chosen forms of degrees d_1 \leq \dots \leq d_{n+1}. We give the precise graded Betti…”
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Geometric Consequences of Extremal Behavior in a Theorem of Macaulay
Published in Transactions of the American Mathematical Society (1994)“…F. S. Macaulay gave necessary and sufficient conditions on the growth of a nonnegative integer-valued function which determine when such a function can be the…”
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The Minimal Resolution Conjecture on a general quartic surface in $\mathbb P^3
Published 18-07-2017“…Musta\c{t}\u{a} has given a conjecture for the graded Betti numbers in the minimal free resolution of the ideal of a general set of points on an irreducible…”
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Determinantal schemes and Buchsbaum–Rim sheaves
Published in Journal of pure and applied algebra (26-06-2000)“…Let φ be a generically surjective morphism between direct sums of line bundles on P n and assume that the degeneracy locus, X, of φ has the expected…”
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