Lambert's W meets Kermack-McKendrick Epidemics

Research output: Contribution to journalArticle

Abstract

© 2014 The Authors. The central aim of this partly expository paper is pressing the point that a certain transcendental equation for the final size of an susceptible-infected-removed epidemic model has an explicit solution in terms of the Lambert W-function, an elementary function. Known branch point and continued fraction approximations yield simple and highly accurate numerical approximations which are considerably better than the traditional Kermack-McKendrick approximation. A Karamata expansion easily yields refined forms of the second threshold theorem.
Original languageEnglish
Pages (from-to)1368-1386
JournalIMA Journal of Applied Mathematics
Volume80
Issue number5
DOIs
Publication statusPublished - 2015

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