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Blocking sets in block designs |
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| Authors: | David A. Drake |
| Affiliation: | Department of Mathematics, University of Florida, Gainesville, Florida 32611, USA |
| Abstract: | A lower bound is obtained for the cardinality of a blocking set in a non-symmetric block design. The known lower bound for blocking sets in symmetric block design is proved to hold (if and) only if the blocking set is a Baer subdesign. |
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