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Depth and Stanley depth of the facet ideals of some classes of simplicial complexes

Xiaoqi Wei, Yan Gu (2017)

Czechoslovak Mathematical Journal

Let Δ n , d (resp. Δ n , d ' ) be the simplicial complex and the facet ideal I n , d = ( x 1 x d , x d - k + 1 x 2 d - k , ... , x n - d + 1 x n ) (resp. J n , d = ( x 1 x d , x d - k + 1 x 2 d - k , ... , x n - 2 d + 2 k + 1 x n - d + 2 k , x n - d + k + 1 x n x 1 x k ) ). When d 2 k + 1 , we give the exact formulas to compute the depth and Stanley depth of quotient rings S / J n , d and S / I n , d t for all t 1 . When d = 2 k , we compute the depth and Stanley depth of quotient rings S / J n , d and S / I n , d , and give lower bounds for the depth and Stanley depth of quotient rings S / I n , d t for all t 1 .

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