An extension of the formula for spreading speeds.
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.
Weinberger
Hans F
HF
School of Mathematics, University of Minnesota, Minneapolis, Minnesota 55455, United States. hfw@math.umn.edu
Zhao
Xiao-Qiang
XQ
D004641:Emigration and Immigration; D008954:Models, Biological