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A note on integral functions

Published online by Cambridge University Press:  24 October 2008

R. E. A. C. Paley
R. E. A. C. Paley
Affiliation:
Trinity College
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Extract

1. Let f(z) denote an integral function of finite order ρ. We write

It has been shown that

where hρ is a constant which depends only on ρ. We are naturally led to enquire whether some equation of the form (1.1) may be true with lim sup replaced by lim inf. In this note we show that the reverse is true. We construct an integral function of zero order for which

The proof may easily be modified to construct a function of any finite order or of infinite order for which (1.2) is satisfied.

Information

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 28 , Issue 3 , July 1932 , pp. 262 - 265
Copyright
Copyright © Cambridge Philosophical Society 1932

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References

* For ρ ≤ ½, the best possible value of h ρ is known to be (sin πρ)/πρ. For ρ ≤ ½ it seems likely that the correct constant is 1/(πρ), which is the value for the function (2.1), with a = 1/ρ. Miss M. L. Cartwright has shown me a proof of (1.1) with a constant h ρ which for large values of ρ is asymptotically 1/(2eρ).

† See e.g. Bieberbach, L., Lehrbuch der Functionentheorie, 2 (1927), 265–269.Google Scholar