On the Behaviour of Stanley Depth under Variable Adjunction

Details On the Behaviour of Stanley Depth under Variable Adjunction On the Behaviour of Stanley Depth under Variable Adjunction

2010-07-20

arxiv.org/abs/1007.3340v1

Mathematics

Commutative Algebra

Scientific paper

Let $S=K[x_1,...,x_n]$ be a polynomial ring in $n$ variables over the field $K$. For integers $1\leq t< n$ consider the ideal $I=(x_1,...,x_t)\cap(x_{t+1}, ...,x_n)$ in $S$. In this paper we bound from above the Stanley depth of the ideal $I'=(I,x_{n+1},...,x_{n+p})\subset S'=S[x_{n+1},...,x_{n+p}]$. We give similar upper bounds for the Stanley depth of the ideal $(I_{n,2},x_{n+1},...,x_{n+p})$, where $I_{n,2}$ is the square free Veronese ideal of degree 2 in $n$ variables.

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