# LIB2-056 — The selected winding symmetry model has one scale class

- class: CLAIM · review_state: PUBLISHED · house_tier: not yet assigned
- labels as printed: math_status NOT_PRINTED · attachment NOT_PRINTED · scorecard tier word none (PDF p.269)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

For the banked Sym(Wind) census with ncyl = 2, the scale-class count is dim H²(Sym;R+) = 1, with the area cocycle as generator.

## Caution

The count does not establish exhaustiveness of the symmetry model or determine the numerical value of the physical scale.

## Primary source

Appendix P, §2, Theorem 2.4: census and cocycle, PDF p.285: "banked symmetry census (ncyl = 2): the generator is the area cocycle; the physical (both-flip) mirror preserves the class;"

## Machine

- url: /library-v2/LIB2-056/
- content_sha256: a8a7aef7838955ddcb4494ec2daa7377e6fdad4fad745d98ca191ef69d98492f
- candidate_ids: C2-028 C2-069 C2-080

## Freshness

- BUILD_STAMP S371a · 2026-09-26T22:53Z · master 01d1a5873ede42f5 · cut 9dcc6ce9a8ee3e02
- Declared volatile fields (R36): BUILD_STAMP