Weak Lefschetz Property and Stellar Subdivisions of Gorenstein Complexes
Abstract
Assume sigma is a face of a Gorenstein* simplicial complex D. We investigate the question of whether the Weak Lefschetz Property of the Stanley-Reisner ring k[D] (over an infinite field k) is equivalent to the same property of the Stanley-Reisner ring k[Dsigma] of the stellar subdivision Dsigma. We prove that this is the case if the dimension of sigma is big compared to the codimension.
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