定义1 (LATTICE) 给定 n n 个线性无关向量b1,b2,,bnRm b_{1},b_{2},\ldots,b_{n}\in\mathbb{R}^{m} ,由它们产生的格被定义为, L(b1,b2,,bn)={ΣxibixiZ} \mathcal{L}(b_1\:,b_2,\ldots,b_n)=\{\Sigma x_ib_i|x_i\in\mathbb{Z}\}

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