Abstract
We propose and study the problem of finding the smallest nonnegative integer s such that a GDD ( m , n , 3 ; 0 , λ ) can be embedded into a BIBD ( m n + s , 3 , λ ) . We find the values of s for all cases except for the case where n ≡ 5 ( mod 6 ) and m ≡ 1 , 3 ( mod 6 ) and m ≥ 3 , which remains as an open problem.
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More From: Journal of Combinatorial Mathematics and Combinatorial Computing
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