Figure 3From: Geometrical analysis and control optimization of a predator-prey model with multi state-dependent impulse The orbit starting from the phase set \(\pmb{N_{2}}\) (cases in Section 3.2 ). (a) Case I(a). (b) Case I(b). (c) Case I(c). (d) Case II(a). (e) Case II(b). (f) Case II(c). (g) Case III(a). (h) Case III(b). (i) Case III(c). (j) Case IV(a). (k) Case IV(b). (l) Case IV(c).Back to article page