Research Article
The Dynamic Evolution of Firms’ Pollution Control Strategy under Graded Reward-Penalty Mechanism
Table 1
The local stability analysis of equilibrium state
.
| Equilibrium point | Condition for characteristic root | Stability |
| | : that is, , , | Stable point | : that is, , | Unstable node | : that is, | Saddle point | : that is, , | Center point |
|
|