# LIB2-002 — Physical atmospheric registration of the internal 7/16 mismatch

- class: CLAIM · review_state: PUBLISHED · house_tier: not yet assigned
- labels as printed: math_status NOT_PRINTED · attachment Loaded-correspondence · scorecard tier word none (PDF p.59)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

The registration sin²θ₂₃ = 7/16 is a Loaded-correspondence: the chirality and octant torsors admit exactly two equivariant bijections, and the registered map chooses one by convention.

## Caution

This registration does not derive the physical atmospheric octant. Excluding the loaded physical target does not by itself refute the internal mismatch identity unless the readout attachment is first derived.

## Primary source

Paper 3, §5.4, What survives, and it is not nothing, PDF p.64: "A1566/D1244 finds that s501 does not uniquely register that mismatch to the physical lower atmospheric octant: the chirality torsor and the octant torsor admit exactly two equivariant bijections and s501 chooses one by convention."

## Machine

- url: /library-v2/LIB2-002/
- content_sha256: b8d4b0e005af4b17daf506288ac1f7d6f67ea47d76ab0e705904126010a5f9bf
- candidate_ids: C2-005 C2-059

## Freshness

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