On the distances.pdf
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Cavenagh, N., & Ramadurai, R. (2017). On the Distances between Latin Squares and the Smallest Defining Set Size. Journal of Combinatorial Designs, 25(4), 147–158. https://doi.org/10.1002/jcd.21529
Permanent Research Commons link: http://hdl.handle.net/10289/11068
In this note, we show that for each Latin square L of order n≥2 , there exists a Latin square L’≠L of order n such that L and L’ differ in at most 8√n cells. Equivalently, each Latin square of order n contains a Latin trade of size at most 8√n. We also show that the size of the smallest defining set in a Latin square is Ω(n³/²).
This is an author’s accepted version of an article published in the journal: Journal of combinatorial designs. © 2017 Wiley.