Supervision Strategy Analysis on Price Discrimination of E-Commerce Company in the Context of Big Data Based on Four-Party Evolutionary Game

Table 3

Asymptotic stability analysis of equilibrium point of replication dynamic system under the strict supervision of government regulatory department.

Equilibrium point	Eigenvalue symbol	Stability of equilibrium point
E1 (0, 0, 0, 1)	(+, X, X, X)	Instability point
E2 (1, 0, 0, 1)	(−, +, −, −)	Instability point
E3 (0, 1, 0, 1)	(+, X, X, −)	Instability point
E4 (0, 0, 1, 1)	(+, X, X, −)	Instability point
E5 (1, 1, 0, 1)	(−, −, −, −)	ESS in condition (a)
E6 (1, 0, 1, 1)	(−, +, +,−)	Instability point
E7 (0, 1, 1, 1)	(+, X, X,−)	Instability point
E8 (1, 1, 1, 1)	(−, −, −, −)	ESS in condition (b)

Note: X means uncertain of symbol, and ESS means the evolutionarily stable strategy.