A screw candidate whose absent class no reflection contradicts, refused only because its
evidence could not reach min_screw_absence_evidence even with every predicted-absent axial
reflection at the floor (one such reflection reaches 6.9 nats; a row without a control class
reaches nothing), left the symmorphic group adopted and the report saying the group follows from
the absences. Such a row is now SPACE_GROUP_SCREW_UNDETERMINED, with the screw group in
SPACE_GROUP_ALTERNATIVES. Report only: the result is kept apart (unreached_screws) and folded in
after every decision, so the written group and files do not change.
Measured on a monoclinic set whose merge holds five 0k0 reflections at noise level, one of them
predicted absent: P2 was reported as decided by the absences against a deposited P21; it is now
P2 with the b screw open and P21 offered. Over the full battery's candidate tables the condition
holds on that set and one private set (the same P2/P21 case) only. ci tier: no change.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EizBKhTqrAYago9KJG3dA3
leonarski_fandClaude Opus 5.5
e5b69647c5