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A Note on Characteristic Functions Which Vanish Identically in an Interval

Published online by Cambridge University Press:  24 October 2008

Walter L. Smith
Affiliation:
Department of Statistics University of North Carolina

Extract

Some years ago, in connexion with some unpublished work in the theory of queues, the question arose as to whether the characteristic function of a non-negative random variable could vanish identically in an interval. The purpose of this note is to show that such a thing is impossible.

Type
Research Notes
Copyright
Copyright © Cambridge Philosophical Society 1962

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References

REFERENCES

(1)Bieberbach, L.Lehrbuch der Funktionentheorie, II. Bd. 2. Aufl. (B. G. Teubner, Leipzig and Berlin, 1931).Google Scholar
(2)Titchmarsh, E. CTheory of Fourier integrals, (2nd ed.Oxford University Press, 1948).Google Scholar