example of numerical continuation around a turning point using pacopy #126
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While thinking about nonlinearity #119 for the backward facing step #125, I took a look a pacopy, a package for numerical PArameter COntinuation in pure PYthon.
The example in its README is the Bratu–Gelfand two-point boundary value problem which it discretizes using finite differences for the residual and Jacobian. Here the finite differences are replaced with ElementLineP1 on a MeshLine.
It looks like scikit-fem + pacopy work well together.