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《Serials Review》1987,13(4):46-47
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《Serials Review》1987,13(3):68
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《Serials Review》1988,14(3):83
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A projective (2n,n,λ,1)-design is a set of n element subsets (called blocks) of a 2n-element set V having the properties that each element of V is a member of λ blocks and every two blocks have a non-empty intersection. This paper establishes existence and non-existence results for various projective (2n,n,λ,1)-designs and their subdesigns. 相似文献
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