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arxiv: 1806.04446 · v1 · pith:VG2CZABPnew · submitted 2018-06-12 · 🧮 math.AC

Quadrics defined by skew-symmetric matrices

classification 🧮 math.AC
keywords conjecturesentriesfreeindeterminatematrixminimalmodelresolution
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In this paper we propose a model for computing a minimal free resolution for ideals of the form $I_{1}(X_{n}Y_{n})$, where $X_{n}$ is an $n\times n$ skew-symmetric matrix with indeterminate entries $x_{ij}$ and $Y_{n}$ is a generic column matrix with indeterminate entries $y_{j}$. We verify that the model works for $n=3$ and $n=4$ and pose some statements as conjectures. Answering the conjectures in affirmative would enable us to compute a minimal free resolution for general $n$.

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