We introduce an equivalence relation between difference families which declare two difference families to be similar if one can be obtained from the other by changing the signs of some base blocks. By means of an algorithm, written in PHP language and published at http://www.designtheory.it/tni, we investigate the problem of establishing how many non-isomorphic difference families are contained in a given similarity class.
New designs by changing... the signs
BRUGNOLI, EMANUELE;BURATTI, Marco
2013
Abstract
We introduce an equivalence relation between difference families which declare two difference families to be similar if one can be obtained from the other by changing the signs of some base blocks. By means of an algorithm, written in PHP language and published at http://www.designtheory.it/tni, we investigate the problem of establishing how many non-isomorphic difference families are contained in a given similarity class.File in questo prodotto:
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