Figure 1: Dynamic payoff matrices.
From: Emergence of stable polymorphisms driven by evolutionary games between mutants
Mutant games are characterized by growing and shrinking payoff matrices, as shown in this example with 3 and 4 types. All elements of the payoff matrix can be different, whereas for the special case of constant selection payoff entries in each row are identical. (a) A mutation increases the dimension of the payoff matrix from 3 to 4. The new column describes interactions of the previous types with the new mutant, whereas the new row describes the interactions of the new mutant with the previous types. (b) Extinction of a type S2 decreases the dimension of the payoff matrix from 4 to 3. Whenever a type goes extinct, the corresponding row and column of the payoff matrix are deleted.
