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Convergence and Analytic Continuation for a Class of Regular C-Fractions

Published online by Cambridge University Press:  20 November 2018

D. Masson*
Affiliation:
University of TorontoToronto, Ontario, Canada
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Abstract

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Regular C-fractions f(α) = 1 + a1α/1 + a2α/1 + . .. with an = an2 + bn + c + Vn, |Vn| sufficiently small are examined. In the case Vn = 0, exact expressions are obtained which reveal a two sheeted Riemann structure for f(α). If Vn ≠ 0 analytic properties are obtained by means of perturbation theory applied to the associated difference equation. A conjecture that f(α) is the ratio of two entire functions of for an even larger class of C-fractions is proved for the case .

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 1985

References

1. Baker, G.A. Jr., and Graves-Morris, P., Padé approximants Part I: Basic theory, Vol. 13 in, Encyclopedia of mathematics and its applications (Addison-Wesley, Reading Mass., 1981).Google Scholar
2. Gautschi, W., Computational aspects of three-term recursion relations, SIAM Review, 9 (1967), pp. 2482.Google Scholar
3. Jones, W.B. and Thron, W.J., Continued fractions analytic theory and applications, Vol. 11 in, Encyclopedia of mathematics and its applications (Addison-Wesley, Reading Mass., 1980).Google Scholar
4. Masson, D., The rotating harmonic oscillator eigenvalue problem I. Continued fractions and analytic continuation, J. Math. Phys. 24 (1983), pp. 20742088.Google Scholar
5. Perron, O., Die Lehre von den Kettenbruchen (Verlag und Druck, Leipzig und Berlin, 1929).Google Scholar
6. Thron, W.J. and Waadeland, H., Analytic continuation of functions defined by means of continued fractions, Math. Scand. 47 (1980), pp. 7290.Google Scholar
7. Wall, H.S., Analytic theory of continued fractions (D. Van Nostrand, Princeton, N.J., 1948).Google Scholar