TS grand plan

[Jed Brown]

Lisandro Dalcin wrote:
> Indeed. I was "forced" to invent my TSPYTHON implementation just
> because for the problems I have to solve at home (full implicit,
> nonlinear, theta method), I had no other facilities in core PETSc. In
> short, at every time step, I need to solve F(t,x,x')=0, so your
> proposal is what I was always wanted to have in PETSc.

There is TS_Theta, but it's lame and was really just to test the
f(t,x,x')=0 stuff prior to TS_GL.  I'm putting error estimation and
adaptivity into TS_GL, should be there in a few days.

Jed

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