<commit_before>#!/bin/bash
set -e
set +x

# generate matrix .dat files to show dependence of norms of S_h^{-1} on the
# mesh size h, for different mixed FE methods; here we just write the whole
# system matrix K_h; the problem is -nobase so K_h is invertible IF the
# elements are stable
<commit_msg>clarify schur matrix generation (related to table showing schur condition number or rank-deficiency)<commit_after>#!/bin/bash
set -e
set +x

# generate matrix .dat files to show dependence of norms of S_h^{-1} on the
# mesh size h, for different mixed FE methods; here we just write the whole
# system matrix K_h

# details:
#   1. the problem is -nobase so K_h is invertible IF the elements are stable
#   2. we want the unpreconditioned matrix
#   3. -s_ksp_rtol 1.0 so terminates in one iteration

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