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Separating Singularities of Holomorphic Functions

Published online by Cambridge University Press:  20 November 2018

Jürgen Müller
Affiliation:
Fachbereich IV, Mathematik Universität Trier D-54286 Trier Germany, email: jmueller@uni-trier.de
Jochen Wengenroth
Affiliation:
Fachbereich IV, Mathematik Universität Trier D-54286 Trier Germany, email: wengen@uni-trier.de
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Abstract

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We present a short proof for a classical result on separating singularities of holomorphic functions. The proof is based on the open mapping theorem and the fusion lemma of Roth, which is a basic tool in complex approximation theory. The same method yields similar separation results for other classes of functions.

Keywords

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1998

References

1. Aronszajn, N., Sur les décompositions des fonctions analytiques uniformes et sur leur applications. Acta Math. 65 (1935), 1156.Google Scholar
2. Bonilla, A. and Fariña, J. C., Elliptic fusion lemma. Math. Japon. 41 (1995), 441445.Google Scholar
3. Dufresnoy, A., Gauthier, P. M. and Ow, W. H., Uniform approximation on closed sets by solutions of elliptic partial differential equations. Complex Variables Theory Appl. 6 (1986), 235247.Google Scholar
4. Gaier, D., Remarks on Alice Roth's fusion lemma. J. Approx. Theory 37 (1983), 246250.Google Scholar
5. Gaier, D., Lectures on Complex Approximation. Birkhäuser, Boston, 1987.Google Scholar
6. Garnett, J., Analytic Capacity and Measure. Springer, Berlin, 1972.Google Scholar
7. Hörmander, L., An Introduction to Complex Analysis in Several Variables. 3rd edn, North-Holland, Amsterdam, 1990.Google Scholar
8. Kalton, N. J., Peck, N. T. and Roberts, J.W., An F-Space Sampler. Cambridge University Press, Cambridge, 1984.Google Scholar
9. Nersesjan, A., Alice Roth's fusion lemma. Soviet J. Contemporary Math. Anal. 23 (1988), 3447.Google Scholar
10. Roth, A., Uniform and tangential approximation by meromorphic functions on closed sets. Canad. J. Math. 28 (1976), 104111.Google Scholar
11. Rudin, W., Functional Analysis. McGraw-Hill, New York, 1973.Google Scholar
12. Schmieder, G., Fusion lemma and boundary structure. J. Approx. Theory 71 (1992), 305311.Google Scholar