STITCH-MECH v0.1 — JHTDB Pilot A

SURVIVES_LOCAL_GEOMETRY_CONTROL

Scale–time stitching under harder nulls

Real mean D□ = 0.0266275

ControlNull mean D□Fav zpQuality
N00.9967861022.660.00990099FROZEN ROUTE-I CONTROL
N10.329091106.4040.00990099PASS
N20.22364944.69450.00990099PASS

Object-level mechanism

Eligible source objects: 4957

Geometry-conditioned partial rank ρ(D□, enstrophy) = 0.179019
Geometry-conditioned partial rank ρ(D□, dissipation proxy) = 0.120047

Partial-rank values condition on scale, time, route-overlap geometry, distance/feature compatibility, and branch/merge flags. They test whether physical intensity retains association with D_square after those controls.

Interpretation boundary

The null hierarchy tests whether low D_square survives increasingly local route controls available from the frozen object/edge tables. N1/N2 preserve degree and route layers while constraining recomputed centroid geometry; N2 also constrains enstrophy-based feature similarity. They do NOT preserve exact voxel overlap/Iou because voxel masks are not part of the frozen ROUTE-I run. Survival therefore rejects these graph-local geometric explanations, not every possible field-level geometric surrogate.