منابع مشابه
Monomial ideals and independence of IΣ2 DRAFT
We show that a miniaturised version of Maclagan’s theorem on monomial ideals is equivalent to 1−Con(IΣ2) and classify a phase transition threshold for this theorem. This work highlights the combinatorial nature of Maclagan’s theorem. Monomial ideals play an important role in commutative algebra and algebraic combinatorics. Maclagan’s theorem has several applications in computer algebra (See, fo...
متن کاملMonomial Ideals
Monomial ideals form an important link between commutative algebra and combinatorics. In this chapter, we demonstrate how to implement algorithms in Macaulay 2 for studying and using monomial ideals. We illustrate these methods with examples from combinatorics, integer programming, and algebraic geometry.
متن کاملMonomial Ideals and Duality
These are lecture notes, in progress, on monomial ideals. The point of view is that monomial ideals are best understood by drawing them and looking at their corners, and that a combinatorial duality satisfied by these corners, Alexander duality, is key to understanding the more algebraic duality theories at play in algebraic geometry and commutative algebra. Sections written so far cover Alexan...
متن کاملSplittings of Monomial Ideals
We provide some new conditions under which the graded Betti numbers of a monomial ideal can be computed in terms of the graded Betti numbers of smaller ideals, thus complementing Eliahou and Kervaire’s splitting approach. As applications, we show that edge ideals of graphs are splittable, and we provide an iterative method for computing the Betti numbers of the cover ideals of Cohen-Macaulay bi...
متن کاملPower of Monomial Ideals
1. Preliminaries 3 2. Gröbner Bases 3 2.1. Motivating Problems 3 2.2. Ordering of Monomials 3 2.3. The Division Algorithm in S = k[x1, . . . , xn] 5 2.4. Dickson’s Lemma 7 2.5. Gröbner Bases and the Hilbert Basis Theorem 10 2.6. Some Further Applications of Gröbner bases 18 3. Hilbert Functions 21 3.1. Macaulay’s Theorem 27 3.2. Hilbert Functions of Reduced Standard Graded k-algebras 37 3.3. Hi...
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ژورنال
عنوان ژورنال: Mathematical Logic Quarterly
سال: 2017
ISSN: 0942-5616,1521-3870
DOI: 10.1002/malq.201500035