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Random walks and periodic continued fractions

Published online by Cambridge University Press:  01 July 2016

Wolfgang Woess*
Affiliation:
Montanuniversität Leoben
*
Postal address: Institut für Mathematik und Angewandte Geometrie, Montanuniversität Leoben, A-8700 Leoben, Austria.

Abstract

Nearest-neighbour random walks on the non-negative integers with transition probabilities p0,1 = 1, pk,k–1 = gk, pk,k+1 = 1– gk (0 < gk < 1, k = 1, 2, …) are studied by use of generating functions and continued fraction expansions. In particular, when (gk) is a periodic sequence, local limit theorems are proved and the harmonic functions are determined. These results are applied to simple random walks on certain trees.

Type
Research Article
Copyright
Copyright © Applied Probability Trust 1985 

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References

Bender, E. A. (1974) Asymptotic methods in enumeration. SIAM Rev. 16, 485515.Google Scholar
Figà-Talamanca, A. and Picardello, M. (1982) Spherical functions and harmonic analysis on free groups. J. Functional Anal. 47, 281304.Google Scholar
Gerl, P. (1984) Continued fraction methods for random walks on ℕ and on trees. In Probability Measures on Groups, Proceedings, Oberwolfach 1983. Lecture Notes in Mathematics 1064, Springer-Verlag, Berlin, 131146.Google Scholar
Gerl, P. and Woess, W. (1983) Simple random walks on trees.Google Scholar
Henrici, P. (1977) Applied and Computational Complex Analysis , Vol. 2. Wiley, New York.Google Scholar
Jones, W. B. and Thron, W. J. (1980) Continued Fractions. Encyclopedia of Math. and Appl. 11. Addison-Wesley, London.Google Scholar
Karlin, S. and Mcgregor, J. (1959) Random walks. Illinois J. Math. 3, 6681.Google Scholar
Papangelou, F. (1967) Strong ratio limits, R-recurrence and mixing properties of discrete parameter Markov chains. Z. Wahrscheinlichkeitsth. 8, 259297.Google Scholar
Perron, O. (1957) Die Lehre von den Kettenbrüchen , Band 2. Teubner, Stuttgart.Google Scholar
Sawyer, S. (1978) Isotropic random walks in a tree. Z. Wahrscheinlichkeitsth. 42, 279292.CrossRefGoogle Scholar
Vere-Jones, D. (1962) Geometric ergodicity in denumerable Markov chains. Quart. J. Math. (Oxford) (II) 13, 728.CrossRefGoogle Scholar
Wall, H. S. (1948) Analytic Theory of Continued Fractions. Van Nostrand, Toronto.Google Scholar