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2010, 7(1): 187-194. doi: 10.3934/mbe.2010.7.187

An extension of the formula for spreading speeds

1. 

School of Mathematics, University of Minnesota, Minneapolis, Minnesota 55455, United States

2. 

Department of Mathematics and Statistics, Memorial University of Newfoundland, St. John’s, NL A1C 5S7

Received  April 2009 Revised  August 2009 Published  January 2010

A well-known formula for the spreading speed of a discrete-time recursion model is extended to a class of problems for which its validity was previously unknown. These include migration models with moderately fat tails or fat tails. Examples of such models are given.
Citation: Hans F. Weinberger, Xiao-Qiang Zhao. An extension of the formula for spreading speeds. Mathematical Biosciences & Engineering, 2010, 7 (1) : 187-194. doi: 10.3934/mbe.2010.7.187
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