The Golod property for Stanley-Reisner rings in varying characteristic
classification
🧮 math.AC
math.CO
keywords
golodcharacteristiccharacteristicsdeltaexactlygammamathbbproperty
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We show that the Golod property of a Stanley-Reisner ring can depend on the characteristic of the base field. More precisely, for every finite set $T$ of prime numbers we construct simplicial complexes $\Delta$ and $\Gamma$, such that $\mathbb{K}[\Delta]$ is Golod exactly in the characteristics in $T$ and $\mathbb{K}[\Gamma]$ is Golod exactly in the characteristics not in $T$. Along the way, we show that a one-dimensional simplicial complex is Golod if and only if it is chordal.
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