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Reducible 2 – (11, 5, 4) and 3 – (12, 6, 4) designs
Published online by Cambridge University Press: 09 April 2009
Abstract
One way of constructing a 2 – (11,5,4) design is to take together all the blocks of two 2 – (11,5,2) designs having no blocks in common. We show that 58 non-isomorphic 2 – (11,5,4) designs can be so made and that through extensions by complementation these can be packaged into just 12 non-isomorphic reducible 3 – (12,6,4) designs.
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- Research Article
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- Copyright © Australian Mathematical Society 1985