[petsc-users] computing matrix exponentials

[Jed Brown]

amlan barua <abarua at iit.edu> writes:

> I would like to explore some exponential time differencing schemes.

Okay, you that would be an interesting addition to TS.  Keep in mind
that a step of a linearized s-stage Gauss method is an (s,s) order Padé
approximation of the matrix exponential.

It is only known how to use preconditioning to evaluate matrix
exponentials for a small class of problems.
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