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An inequality involving Radon-Nikodym derivatives

Published online by Cambridge University Press:  24 October 2008

J. F. C. Kingman
Affiliation:
University of Sussex

Extract

In (2) a simple proof was given of the following inequality of Atkinson, Watterson and Moran (l), a slight generalization of a result of Scheuer and Mandel ((4), see also (3)) which is of importance in genetics. If aij, pi, qj (i, j = 1, 2, 3,…) are non-negative numbers with

and if

then

and if then This result is shown in (2) to be a special case of a large class of inequalities involving sets of non-negative numbers depending on several indices, and ‘partial averages’ over subsets of those indices.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1967

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References

REFERENCES

(1)Atkinson, F. V., Watterson, G. A. and Moran, P. A. P.A matrix inequality. Quart. J. Math. (Oxford) (2), 11 (1960), 137140.CrossRefGoogle Scholar
(2)Kingman, J. F. C.On an inequality in partial averages. Quart. J. Math. (Oxford) (2), 12 (1961), 7880.CrossRefGoogle Scholar
(3)Mulholland, H. P. and Smith, C. A. B.An inequality arising in genetical theory. Amer. Math. Monthly 66 (1959), 673683.CrossRefGoogle Scholar
(4)Scheuer, P. A. G. and Mandel, S. P. H.An inequality in population genetics, Heredity 13 (1959), 519524.CrossRefGoogle Scholar