Every symmetry under-call in the corpus has the same signature: a lattice whose
metric carries rotations the adopted group does not, with nothing in the run
saying so. The user is left to notice that a P1 answer sits on a cell whose
axes are equal and whose angles are 60 degrees.
So a run that determines its own group now compares the two and says what it
sees. It decides nothing - no threshold, no promotion, no demotion, no
reprocessing - and the message says as much, because a pseudo-symmetric metric
is ordinary and only the intensities can settle whether the extra rotations are
real. Measured over 83 crystals it fires on 19 and covers 6 of the 7
point-group under-calls; on the crystal whose deposited group is F 4 3 2 and
which rugnux reports as P 1, the line reads "the cell metric is cubic - it
admits 24 rotations where P 1 has 1".
The metric symmetry is Le Page's, taken through GEMMI's implementation, at an
obliquity of 1 degree - the middle of the band over which the answer is stable.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EFEJG6WBQv8th4UJFNe53N
leonarski_fandClaude Opus 5
d35e8f680f
