A new method for computing asymptotics of diagonal coefficients of multivariate generating functions
Alexander Raichev, Mark C. Wilson
Abstract
Let Σ&nvec;∈&nats;d F&nvec;&xvec;&nvec; be a multivariate generating function that converges in a neighborhood of the origin of &comps;d. We present a new, multivariate method for computing the asymptotics of the diagonal coefficients Fa1n,…,adn and show its superiority over the standard, univariate diagonal method. Several examples are given in detail.
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