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Cocyclic Generalised Hadamard Matrices and Central Relative Difference Sets

✍ Scribed by A. A. I. Perera; K. J. Horadam


Book ID
110263014
Publisher
Springer
Year
1998
Tongue
English
Weight
563 KB
Volume
15
Category
Article
ISSN
0925-1022

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This paper contains a discussion of cocyclic Hadamard matrices, their associated relative difference sets, and regular group actions. Nearly all central extensions of the elementary abelian 2-groups by Z 2 are shown to act regularly on the associated group divisible design of the Sylvester Hadamard