UK Nonlinear News, May 1996

Follow-up: AUTO and LOCBIF

You may be interested to know that Bard Ermentrout's interactive ODE solver xpp has an interactive interface to AUTO, which allows menu driven problem selection, such as switching between equilibrium points and limit cycles. In addition, the phase plane representation and the bifurcation representation of the problem are synchronized: One can import numerically computed limit cycles into the AUTO window as a starting point for continuation, and one can select a point from the bifurcation diagram and take it back into the phase plane to look at the solution.
For further information check Bard's Web page,
Of course, AUTO still lacks the higher co-dimension tools that LOCBIF has.

Source: Arthur Sherman, (
National Institutes of Health
Diabetes Institute, Mathematical Research Branch
Bethesda, MD USA

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