Heterogeneity and Environmental Preferences Shape the Evolution of Cooperation in Supply Networks

Table 1

Some symbols and the corresponding meanings.

Notation	Meaning
R	The payoff if they both choose cooperation
T	The payoff of the defector, if one player cooperates but the other defects
S	The payoff of cooperator, if one player cooperates but the other defects
P	The payoff if they both choose defection
	The number of nearest neighbours of the player i
	The player i can choose one of the strategies: cooperation or defection
	The matrix payoff of the game
	The accumulated payoff of player i
	The degree of the heterogeneous environment
	The fitness of the player i
	The degree of contribution of the environment to the fitness
	The degree of preference for the environmental level
	The temptation to defect
	The cost-to-benefit rate