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An Extension of the Almost Isolated Singularity of Finite Exponential Order

Published online by Cambridge University Press:  20 January 2009

R. Wilson
Affiliation:
Department of Mathematics, Bedford College, London
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Let f(z) be represented on its circle of convergence |z| = 1 by the Taylor series

and suppose that its sole singularity on |z| = 1 is an almost isolated singularity at z = 1. In the neighbourhood of such a singularity f(z) is regular on a sufficiently small disk, centre z = 1, with the outward drawn radius along the positive real axis excised. If also in this neighbourhood |f(z)| e−(1/δ)ρ remains bounded for some finite ρ, where δ is the distance from the excised radius, then the singularity is said to be of finite exponential order.

Type
Research Article
Copyright
Copyright © Edinburgh Mathematical Society 1964

References

REFERENCES

(1)Cartwright, M. L., Proc. London Math. Soc., (2) 38 (1935), 158179.Google Scholar
(2)Cartwright, M. L., Proc. London Math. Soc., (2) 38 (1935), 503541.CrossRefGoogle Scholar
(3)Macintyre, A. J. and Wilson, R., Proc. London Math. Soc., (2) 47 (1942), 404435.CrossRefGoogle Scholar
(4)Macintyre, A. J. and Wilson, R., Jour. London Math. Soc., 16 (1941), 220229.CrossRefGoogle Scholar
(5)Pólya, G., Annals of Math., (2) 34 (1933), 731777.CrossRefGoogle Scholar