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Special cases. A, B, Coexistence of LC and a stable focus even if a saddle periodic orbit does not exist. A, m = 0, x0 = −0.1. Parameters are as follows: r = 0.002, I.C = [0 −5 2.83] on the right; I.C = [0 −5 1.5] on the left, and Ts = [0:0.01:600]. B, m = 0, x0 = −0.05. Parameters are as follows: r = 0.002, black trajectory: I.C = [0 −5 2.83] and Ts = [0:0.01:600]; Blue trajectory: I.C = [0 −5 2.84] and Ts = [0:0.01:900].
