A SYMBOLIC POWER OF THE IDEAL OF A STANDARD k-CONFIGURATION IN P2
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In [4], the authors show that if X is a k-configuration in P2 of type (d1, . . . , ds) with ds > s ≥ 2, then △HmX(mds-1) is the number of lines containing exactly ds-points of X for m ≥ 2. They also show that if X is a k-configuration in P2 of type (1, 2, . . . , s) with s ≥ 2, then △HmX(mX - 1) is the number of lines containing exactly s-points in X for m ≥ s+1. In this paper, we explore a standard k-configuration in P2 and find that if X is a standard k-configuration in P2 of type (1, 2, . . . , s) with s ≥ 2, then △HmX(mX - 1) = 3, which is the number of lines containing exactly s-points in X for m ≥ 2 instead of m ≥ s + 1.
Abstract
In [4], the authors show that if X is a k-configuration in P2 of type (d1, . . . , ds) with ds > s ≥ 2, then △HmX(mds-1) is the number of lines containing exactly ds-points of X for m ≥ 2. They also show that if X is a k-configuration in P2 of type (1, 2, . . . , s) with s ≥ 2, then △HmX(mX - 1) is the number of lines containing exactly s-points in X for m ≥ s+1. In this paper, we explore a standard k-configuration in P2 and find that if X is a standard k-configuration in P2 of type (1, 2, . . . , s) with s ≥ 2, then △HmX(mX - 1) = 3, which is the number of lines containing exactly s-points in X for m ≥ 2 instead of m ≥ s + 1.
참고문헌 (9)
- C. Bocci, "Comparing powers and symbolic powers of ideals", J. Alge-braic Geom., 19(3), pp.399~417 (2010)[DOI]
- S. Cooper, "Combinatorial bounds on Hilbert functions of fat points in projective space", J. Pure Appl. Algebra, 215, pp.2165~2179 (2011)[DOI]
- F. Galetto, "The Symbolic Defect of an Ideal"
- TEX>-configurations, "Distinguishing <TEX>$\mathbb{k}$<", F. Galetto
- A.V. Geramita, "Star Configurations in <TEX>$\mathbb{P}^n$<", TEX>, 2013, pp.376, 279~299
- A.V. Geramita, "Matroid Configurations and Symbolic Powers of Their Ideals"
- A.V. Geramita, "An Alternative to the Hilbert function for the ideal of a finite set of points in <TEX>$\mathbb{P}^n$<", TEX>, 2001, pp.45(1), 1~23
- A.V. Geramita, "Extremal point sets and Gorenstein ideals", Adv. Math., 152, pp.78~119 (2000)[DOI]
- L.G. Roberts, "On Hilbert functions of reduced and of integral algebras", J. Pure Appl. Algebra, 56, pp.85~104 (1989)[DOI]
