Journal
COMBINATORICS PROBABILITY & COMPUTING
Volume 13, Issue 4-5, Pages 735-761Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0963548304006248
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Let F(z) = Sigma(r)a(r)z(r) be a multivariate generating function that is meromorphic in some neighbourhood of the origin of C-d, and let V be its set of singularities. Effective asymptotic expansions for the coefficients can be obtained by complex contour integration near points of 11'. In the first article in this series, we treated the case of smooth points of 1. In this article we deal with multiple points of 11-. Our results show that the central limit (Ornstein-Zernike) behaviour typical of the smooth case does not hold in the multiple point case. For example, when 11- has a multiple point singularity at 1), rather than a(r) decaying as \r\(-1/2) as \r\ - infinity, a(r) is very nearly polynomial in a cone of directions.
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