On the generalized Scarf complex of lattice ideals
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Let $k$ be a field, $ \mathcal{L}\subset \mathbb{Z}^n$ be a lattice such that $Ł\cap \mathbb{N}^n=\{{\bf 0}\}$, and $I_Ł\subset \Bbbk[x_1,..., x_n]$ the corresponding lattice ideal. We present the generalized Scarf complex of $I_Ł$ and show that it is indispensable in the sense that it is contained in every minimal free resolution of $R/I_Ł$.
15 pages
15 pages