EVOLUTION WITH CHANGING MUTATION-RATES

This article considers the robustness of long run equilibria when muta tion rates are not assumed to be constant over time. Particular attent ion is paid to the case where mutation rates decline to zero in the li mit. It is Found that if behavior is ergodic, then it corresponds to t he long run equilibrium for the game. However, conditions for ergodici ty become increasingly restrictive as population size increases. (C) 1 998 Academic Press.