A linear algebraic approach to orthogonal arrays and Latin squares

Details A linear algebraic approach to orthogonal arrays and Latin squares A linear algebraic approach to orthogonal arrays and Latin squares

2009-05-02

arxiv.org/abs/0905.0195v1

Mathematics

Combinatorics

11 pages

Scientific paper

To study orthogonal arrays and signed orthogonal arrays, Ray-Chaudhuri and Singhi (1988 and 1994) considered some module spaces. Here, using a linear algebraic approach we define an inclusion matrix and find its rank. In the special case of Latin squares we show that there is a straightforward algorithm for generating a basis for this matrix using the so-called intercalates. We also extend this last idea.

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