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Note on difference-covers that are not k-sum-covers

Published online by Cambridge University Press:  26 February 2010

T. H. Jackson
Affiliation:
Department of Mathematics, University of York, York YO1 5DD.
F. Rehman
Affiliation:
Department of Mathematics, University of York, York YO1 5DD.
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Extract

For some integer modulus q let F be a subset of Z(q), the additive group of residues modulo q. As in «1» we shall write

and

Type
Research Article
Copyright
Copyright © University College London 1974

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References

1.Jackson, T. H., Williamson, J. H. and Woodall, D. R.. “Difference-covers that are not k-sum covers. I”, Proc. Camb. Phil. Soc, 72 (1972), 425438.CrossRefGoogle ScholarPubMed
2.Jackson, T. H.. “Asymmetric sets of residues”, Mathematika, 19 (1972), 191199.CrossRefGoogle Scholar
3.Connolly, D.. “Integer difference covers which are not k-sum covers, for k = 6, 7”, Proc. Camb. Phil. Soc, 74 (1973), 1728.CrossRefGoogle Scholar
4.Haight, J. A.. “Difference covers which have small k-sums for any k”, Mathematika, 20 (1973), 109118.CrossRefGoogle Scholar