# Galaxy Structural Fingerprints — foundation synthesis

## Foundation assets

- three frozen SPARC source files;
- 3389 prepared valid radial rows;
- 175 paired chamber ladders;
- STRUC-I and STRUC-PERC-I research interfaces;
- direct STRUC-I and STRUC-PERC-I chamber output exports;
- 121 consolidated galaxy fingerprints;
- 4840 complete STRUC-I κ-profile rows;
- neutral curve descriptors;
- a low-dimensional multichannel structural atlas;
- registered Gate B and Gate C outputs;
- a polished Excel archive.

## Foundation result

The programme establishes a reproducible multiscale structural fingerprint for each primary galaxy under its measured ladder representation.

The atlas reveals:

- compact dominant ρ and ν response families;
- a more heterogeneous Aκ channel;
- strong separation of Weak Persistence systems;
- physical coherence among structural neighbours;
- simultaneous physical and observational organization;
- distinct persistence, fragmentation, and connectivity axes.

Gate C adds a second foundational result: the fingerprint has a measurable response to point deletion, thinning, radial coverage, and baryonic preparation. This transformation structure is now part of the project rather than an external caveat.

## Next programme

Build normalized fingerprint coordinates, uncertainty envelopes, regime-controlled atlas views, component-origin maps, and local ρ-transfer tests.
