Combinatorics Advances 1995
DOI: 10.1007/978-1-4613-3554-2_20
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Directed Quadruple Designs

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Cited by 3 publications
(2 citation statements)
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“…The above necessary conditions for the existence of a DH λ (m, r, 4, 3) have been proved to be sufficient for r = 1 by Levenshtein [11], Soltankhah [19], Grannell, Griggs and Quinn [4]. Before handling the case where r > 1, we need to present two recursive constructions.…”
Section: Directed H-design Dhmentioning
confidence: 99%
“…The above necessary conditions for the existence of a DH λ (m, r, 4, 3) have been proved to be sufficient for r = 1 by Levenshtein [11], Soltankhah [19], Grannell, Griggs and Quinn [4]. Before handling the case where r > 1, we need to present two recursive constructions.…”
Section: Directed H-design Dhmentioning
confidence: 99%
“…However, for t 3, only the spectrum of 3-(v, 4, 1)DD has been known. Soltankhah, in [7], gave the following necessary and sufficient condition of the existence of 3-(v, 4, 1)DD. The resolvable Steiner quadruple systems have been the focus of attention by many researchers, and there are a lot of results (see, for example, [2,3]).…”
Section: Introductionmentioning
confidence: 97%