The Lower-bound Estimate of D[X<sub>2m</sub>] and Fast Construction of Matrix X<sub>2m</sub>
D[X<sub>2m</sub>]的下界估计与X<sub>2m</sub> 矩阵的快速构造（英文）
摘要
In this paper, the character matrix x n is studied, fast construction method of matrix X 2m is provided. And it is proved that the lower bound estimate of the number of an Latin squares matrix D[X m] is2m(2m)!+∑mi=2[(2m)!] 2∏ij=1K j!∏rj=1b j!.
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