Browsing by Author "Pabhapote N."

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GDDs with two associate classes and with three groups of sizes 1, n and n

Lapchinda W.; Punnim N.; Pabhapote N. (2014)

A group divisible design GDD(v = 1+n+ n, 3, λ1, λ2) is an ordered pair (V, B) where V is an (1 + n + n)-set of symbols and B is a collection of 3-subsets (called blocks) of V satisfying the following properties: the (1 + ...
GDDs with two associate classes and with three groups of sizes 1, n, n and λ1 < λ2

Lapchinda W.; Punnim N.; Pabhapote N. (2013)

A group divisible design GDD(v = 1 + n + n, 3, 3, λ1, λ2) is an ordered pair (V, B) where V is an (1 + n + n)-set of symbols and B is a collection of 3-subsets (called blocks) of V satisfying the following properties: the ...
Group divisible designs with two associate classes and λ2 =1

Pabhapote N.; Punnim N. (2011)

The original classiffcation of PBIBDs defined group divisible designs GDD(ν= ν1 + ν2 +⋯+ νg,g,k, λ1, λ2) with λ1 ≠ 0. In this paper, we prove that the necessary conditions are suffcient for the existence of the group ...

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