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Electronic Journal of Combinatorics
Article . 2017 . Peer-reviewed
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Electronic Journal of Combinatorics
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Combinatorial Reductions for the Stanley Depth of $I$ and $S/I$

Combinatorial reductions for the Stanley depth of \(I\) and \(S/I\)
Authors: Mitchel T. Keller; Stephen J. Young;

Combinatorial Reductions for the Stanley Depth of $I$ and $S/I$

Abstract

We develop combinatorial tools to study the relationship between the Stanley depth of a monomial ideal $I$ and the Stanley depth of its compliment, $S/I$. Using these results we are able to prove that if $S$ is a polynomial ring with at most 5 indeterminates and $I$ is a square-free monomial ideal, then the Stanley depth of $S/I$ is strictly larger than the Stanley depth of $I$. Using a computer search, we are able to extend this strict inequality up to polynomial rings with at most 7 indeterminates. This partially answers questions asked by Propescu and Qureshi as well as Herzog.

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Keywords

Dimension theory, depth, related commutative rings (catenary, etc.), 06A07, 05E40, 13C13, monomial ideal, Stanley's conjecture, Mathematics - Commutative Algebra, Commutative Algebra (math.AC), Theory of modules and ideals in commutative rings described by combinatorial properties, Stanley depth, Other special types of modules and ideals in commutative rings, Combinatorics of partially ordered sets, posets, FOS: Mathematics, Mathematics - Combinatorics, Combinatorics (math.CO), Combinatorial aspects of commutative algebra

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Average
Average
Average
Green
gold