[petsc-users] Near nullspace lost in fieldsplit

[Jeremy Theler (External)]

>   The new code is in https://gitlab.com/petsc/petsc/-/merge_requests/7293 and retains the null space on the submatrices for both MatZeroRows() and MatZeroRowsAndColumns() regardless of changes to the nonzero structure of the matrix.

Thank you very much Barry.
It works as expected.

--
jeremy
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