English: The figure shows two orbits on xy-phase plane of the following delayed logistic map
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The parameter of the right figure is a = 1.95 and one of the left figure is 2.05, but both initial conditions are the same x0 = 0.6 and y0 = 0.6. A Neimark-Sacker bifurcation occurs at a = 2. Once the bifurcation occurs, the attractor changes from a fixed point to a closed curve (quasi-periodic orbit).