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Showing 1 to 1 of 1 for “"tight designs"”.
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Double-Change Covering Designs with Block Size k = 4
… The object is to minimize b for a fixed v and k. Tight designs are those in which each pair is covered exactly once. We present constructions of tight dccd’s for arbitrary v when k = 2 and minimal constructions for v <= 20 when k = 4. A general, but not minimal, method is presented to construct …