Difference Covering Arrays and Pseudo-Orthogonal Latin Squares

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• 作者：Fatih Demirkale ; Diane Donovan ; Joanne Hall ; Abdollah Khodkar…
• 刊名：Graphs and Combinatorics
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：32
• 期：4
• 页码：1353-1374
• 全文大小：524 KB
• 刊物类别：Mathematics and Statistics
• 刊物主题：Mathematics
  Combinatorics
  Engineering Design
  
• 出版者：Springer Japan
• ISSN：1435-5914
• 卷排序：32

文摘

A pair of Latin squares, A and B, of order n, is said to be pseudo-orthogonal if each symbol in A is paired with every symbol in B precisely once, except for one symbol with which it is paired twice and one symbol with which it is not paired at all. A set of t Latin squares, of order n, are said to be mutually pseudo-orthogonal if they are pairwise pseudo-orthogonal. A special class of pseudo-orthogonal Latin squares are the mutually nearly orthogonal Latin squares (MNOLS) first discussed in 2002, with general constructions given in 2007. In this paper we develop row complete MNOLS from difference covering arrays. We will use this connection to settle the spectrum question for sets of 3 mutually pseudo-orthogonal Latin squares of even order, for all but the order 146.KeywordsDifference covering arrayLatin squaresPseudo-orthogonal Latin squaresMutually nearly orthogonal Latin squares