Evolution Model of Health Food Safety Risk Based on Prospect Theory

Table 6

Results of local stability analysis under Case 4.

	Symbols of each element in the Jacobian matrix				det J	tr J	Stability
		−	0	0				+	−	Uncertain	Unstable
	+	0	0	−	−	Uncertain	Unstable
	+	0	0	−	−	Uncertain	Unstable
	−	0	0	+	−	Uncertain	Unstable