Minimal and minimum size latin bitrades of each genus
James Lefevre, Diane Donovan, Nicholas J. Cavenagh, Aleš Drápal (2007)
Commentationes Mathematicae Universitatis Carolinae
Similarity:
Suppose that and are partial latin squares of order , with the property that each row and each column of contains the same set of entries as the corresponding row or column of . In addition, suppose that each cell in contains an entry if and only if the corresponding cell in contains an entry, and these entries (if they exist) are different. Then the pair forms a . The of is the total number of filled cells in (equivalently ). The latin bitrade is if there is no...