[petsc-users] projection methods in TS

[Jed Brown]

Matthew Knepley <knepley at gmail.com> writes:
> He says
>
>   y' = f(y)
>
>   0  = g(y)
>
> which appears to me to be a Hessenberg index-2 DAE. Is that correct?

The equations above are obviously overdetermined as stated.  Perhaps
there are more variables?
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