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关于不完全r-自正交拉丁方的存在性
引用本文:余伟,徐允庆. 关于不完全r-自正交拉丁方的存在性[J]. 宁波大学学报(理工版), 2008, 21(3): 358-363
作者姓名:余伟  徐允庆
作者单位:宁波大学理学院,浙江宁波315211
基金项目:浙江省自然科学基金(Y607026); 宁波市自然科学基金(2006A610094)
摘    要:如果2个n阶不完全拉丁方重叠后正好产生r个不同的有序对,则称它们是,r-正交的,记作r—IMOLS(n,u),其中u为缺少的子拉丁方的阶数.进一步,如果第2个拉丁方是第1个拉丁方的转置,则称它们是,r-自正交的,记作r—ISOLS(n,u).本文给出当u∈{1,2,3,4}时,r—ISOLS(4m+u,u)的存在性.

关 键 词:r-自正交  拉丁方  截态

Study on Existence of Incomplete r-self-orthogonal Latin Squares
YU Wei,XU Yun-qing. Study on Existence of Incomplete r-self-orthogonal Latin Squares[J]. Journal of Ningbo University(Natural Science and Engineering Edition), 2008, 21(3): 358-363
Authors:YU Wei  XU Yun-qing
Affiliation:YU Wei,XU Yun-qing(Faculty of Science,Ningbo University,Ningbo 315211,China)
Abstract:Two incomplete Latin squares of order v are r -orthogonal if their superposition produces exactly r distinct ordered pairs, denoted by r-IMOLS (n, u), where u is the order of holey Latin square. In addition, if the second square is the transpose of the first one, then the first square is deemed to be r -self-orthogonal, denoted by r -ISOLS (n,u). In this paper, the existence ofr -ISOLS (4m + u,u) is investigated for the case u ∈ {1,2,3,4}.
Keywords:r-orthogonal  Latin square  transversal  
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