# LIB2-060 — The solar-angle readout is conditional on ordering and the propagation interface

- class: CLAIM · review_state: PUBLISHED · house_tier: not yet assigned
- labels as printed: math_status NOT_PRINTED · attachment NOT_PRINTED · scorecard tier word Derived-conditional (PDF p.58)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

Under the declared normal ordering, resolvent-ladder and propagation-interface premises, the solar-angle readout is tan θ12 = √3/ϕ².

## Caution

The readout does not derive the mass ordering or the ladder-to-propagation-eigenstate interface.

## Primary source

Paper 5, §2, Solar-angle expression, PDF p.83: "√ PMNS 3 tan θ12 = 2, (PMNS solar angle — THEOREM) (1) ϕ"

## Machine

- url: /library-v2/LIB2-060/
- content_sha256: 459b5449816dd6144d59755167971cd5b119659a396add56a1c1be8c84035de9
- candidate_ids: C2-004 C2-058

## Freshness

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