[petsc-users] TSBDF info

[Alfredo J Duarte Gomez]

Good morning PETSC team,

I am looking to implement a fully implicit BDF-DAE solver and I came across
the TSBDF object https://petsc.org/release/src/ts/impls/bdf/bdf.c.html#TSBDF
.

This seems to be exactly what I am looking for, but I still have questions
and I can't seem to find much from it in the documentation or the users
manual.

The key question for me is whether this is implementation is a *Variable
Leading Coefficient BDF *or *Fixed-Leading Coefficient BDF* (such as
CVODE). This impacts my ability of reusing matrix factorizations.

Thank you,

-Alfredo

-- 
Alfredo Duarte
Graduate Research Assistant
The University of Texas at Austin
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