Viscous Population Equilibria

Roger Myerson

No 906, Discussion Papers from Northwestern University, Center for Mathematical Studies in Economics and Management Science

Abstract: Viscosity in a biological population is the tendency of individuals to have a higher rate of interactions with their closer relatives than with similar numbers of more distantly related individuals. This paper presents a simple method of equilibrium analysis to predict the effect of viscosity in biological games. Taking the limit as viscosity goes to zero, a set of fluid population equilibria is defined. The set of fluid population equilibria is nonempty and includes all evolutionary stable strategies.

Date: 1990-09
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Journal Article: Viscous population equilibria (1991)
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