Travelling Wave Solutions of Nonlinear Dynamical Equations in a Double-Chain Model of DNA

Figure 2

The bifurcation phase portraits of system (6) with 𝐴>0.

(a) 𝐵>0, 𝐶>0

(b) 𝐵>0, 𝐶<0

(c) 𝐵<0, 𝐶>0

(d) 𝐵<0, 𝐶<0