Looking at "Generatingfunctionology" by Wilf, it seems that complex analysis is quite useful when it comes to finding asymptotic approximations. However, what prerequisites from complex analysis are actually needed? I've seen that Cauchy's theorem is used quite often, but is there anything apart from it that is needed?
2026-04-24 20:49:13.1777063753
Complex analysis for generating functions
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Each of the chapters IV - VIII
starts with explanatory sections and cites resp. derives the theorems needed to understand the given applications.