Space group (13.1): every setting of a chosen rotation set is offered;
screws are claimed at 8 nats, with how that bound was set; the P1 search
merge is cut where a monotone fit of <I/sigma> drops under 1; the
operator-homogeneity gate reads the R gap between a subgroup and the rest;
a lattice-holohedral group is refused when merging under it narrows the
L-test like a twin.
Outliers (13.3): the rotation median is weighted at the expected
intensity, and the band's systematic part is multiplicative, with its
spread measured on the merge's own fulls.
Indexing: a sparse lattice is integrated on every frame; pass 1's lattice
is a hypothesis against a different re-index, and a pass sent back reuses
pass 1's indexing. Image: the flipped axis sign must beat chance; the
same-lattice beam-centre retry on an inconsistent merge.
Integration: five correction surfaces, not four; the .hkl carries no
amplitudes; the fulls' scale is smoothed differently from the partials'.
Tutorial: the correction surfaces are cross-validated on the half-set
correlation (as the reference says), not on an R_meas-like deviation.
Overview: the footprint, the 5 A indexing hypothesis, the centre of
symmetry, and the GPU pre-scan.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01K5K8jvPPbmCrbqnWkddTuB
leonarski_fandClaude Opus 5.5
e2084895db
