Up: Calculation of the Isocline
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This paper proposed a calculation method to obtain the location
of the fixed point in given nonlinear discrete system
when the argument of complex multipliers is specified.
We calculated several isoclines corresponding to
the special value of arguments, then the stability
and instantaneous phase around the fixed point has been clarified.
As an application, we also proposed a new calculation method
of NS bifurcation parameter values with specified argument.
In addition, cross points of a cusp in a periodic
entrainment region and the NS bifurcation curve has been
identified by this application.
The authors would like to thank Ms. Miyazaki for her
contribution to numerical experimental results.