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Reflections on the legitimate deck problem. - Integral properties of combinatorial matrices. - A class of three-designs. - Isomorphic factorisations III: Complete multipartite graphs. - Biplanes and semi-biplanes.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.