> **Historical provenance document — superseded.** This file preserves an earlier project state. It is not the current scientific interpretation. The canonical v0.3 position is that galaxy-specific structural fingerprints are reproducible and organized; sampling and preparation sensitivity describe how the fingerprints are expressed rather than negating their existence.

# Research scope

## Object of study

The programme studies how ordered baryonic profile ladders respond across perturbation and
connectivity scales.

For each galaxy:

- STRUC-I supplies κ-dependent admissibility curves;
- STRUC-PERC-I supplies connectivity and fragmentation descriptors;
- ordinary ladder geometry is retained as a mandatory control.

## Questions

1. **Identity:** Is a galaxy's full response curve distinguishable from those of other galaxies?
2. **Stability:** Does the curve survive uncertainty, thinning, deletion, and radial truncation?
3. **Physical organization:** Does stable curve structure track gas extent, surface brightness,
   concentration, morphology, or component balance beyond sampling controls?
4. **Component origin:** Which parts of the response arise from gas, disk, bulge, or their combination?
5. **Anomalies:** Which galaxies are structurally unusual relative to otherwise similar systems?

## Interpretive boundary

This research folder does not assign a causal mechanism to chamber coordinates. Structural
classes must not be named physically until they survive stability and sampling controls.
