Stellar Gas Full Cell Eigenmass Stability

Status: FULL_CELL_EIGENMASS_STABILITY

Decision: REPORT_FULL_CELL_EIGENMASS_STABILITY_WITH_NULL_CONTROLS_HOLD_PHYSICAL_CLAIMS

This probe checks the 25-cell DESI/MaNGA joined-cell eigenmass against all available joined cells, leave-one-cell-out slices, deterministic null shuffles, and feature ablations.

Claim boundary: this is evidence-geometry quality control only. It does not promote physical mass, gas density, shock proof, object-level crossmatch, or cosmology.

Full-Cell Baseline

Cell count: 25

Dominant eigenvalue:

4.872368819

Dominant explained mass share:

0.584684258

Dominant eigenvector:

log_desi_count: 0.407663945
log_manga_count: 0.045003218
partial_full_shock_fraction: 0.391682145
shock_lier_fraction: 0.375112377
BGS_share: -0.370321192
ELG_share: 0.443075496
LRG_share: 0.443094949
QSO_share: -0.088734468

Stored 25-Cell Comparison

common-basis cosine to stored probe: 1.0
top-cell overlap at 5:              5
max abs component delta:            0.0

Eigensolver Diagnostics

method:                 jacobi_symmetric
converged:              True
iterations:             87
final max off-diagonal: 6.353076600207743e-13
dominant residual L2:   0.0

Leave-One-Cell-Out Stability

loo count:                 25
min cosine to original:    0.996495428
median cosine to original: 0.99984468
mean cosine to original:   0.999501223
mean top5 overlap:         0.96

Null And Ablation Controls

shuffled_feature_columns: cosine 0.32053877, explained share 0.251750194, top5 overlap 0.0
shuffled_shock_channels: cosine 0.738854689, explained share 0.460461221, top5 overlap 1.0
desi_count_removed: cosine 0.998817144, explained share 0.56433804, top5 overlap 1.0
shock_proxy_removed: cosine 0.993658602, explained share 0.589466219, top5 overlap 1.0
tracer_mix_removed: cosine 0.992371346, explained share 0.629616192, top5 overlap 1.0

Holds

HOLD_PHYSICAL_MASS_INTERPRETATION
HOLD_DIRECT_GAS_DENSITY_INFERENCE
HOLD_SHOCK_PROOF
HOLD_OBJECT_LEVEL_CROSSMATCH
HOLD_SELECTION_FUNCTION_FIT
HOLD_COSMOLOGY_FIT

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