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On group-divisible designs with block size four and group-type 6um1

✍ Scribed by Gennian Ge; R Rees

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
291 KB
Volume
279
Category
Article
ISSN
0012-365X

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πŸ“œ SIMILAR VOLUMES

Incomplete group divisible designs with
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## Abstract The object of this paper is the construction of incomplete group divisible designs (IGDDs) with block size four, group‐type (__g, h__)^__u__^ and index unity. It is shown that the necessary conditions for the existence of such an IGDD are also sufficient with three exceptions and six po

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In this paper we study the group-divisible designs with block size four on at most 30 points. For all but three of the possible group types, we determine the existence or non-existence of the design.

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Dedicated to Professor Haim Hanani on the occasion of his 75th birthday