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Re: cusp fold surface

I have a notebook on the unfolding of the pitch fork bifurcation that
you can download from

The notebook is called imperfect bifurcation

The notebook shows how to plot the 3 dimensional surface (the
catastrophe surface) that displays the unfolding of the bifurcation



dwarnold45 at wrote:
> All,
> Has anyone done a bifurcation analysis of dx/dt=h+rx-x^3, where h and r
> are parameters?
> I am looking for some mathematica code that will darw cusp catastrophe
> surface above bifurcation curves in the (r,h) plane.
> Thanks.

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