# LIB2-279 — Superseded determinant-imaginary-part route for the full leptonic phase

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

## Statement

The archived extension prompt proposed obtaining the full leptonic Dirac phase from the imaginary part of the Jordan determinant; the current print types δCP = −2π/√5 = −160.997° Derived-conditional (Rev29 re-tiering; the pre-Rev29 stamp was Theorem ⋆100).

## Caution

This replacement neither reconstructs the absent determinant-phase proof nor removes the conditions on the current phase attachment.

## Primary source

Paper 5, §3, Retained leptonic-phase readout, PDF p.88: "δCP = −2π/ 5 = −160.997◦"

## Machine

- url: /library-v2/LIB2-279/
- content_sha256: 047768b207d4565a4c5fb41e6f74e24c53fc290e814cfe906de211d1cc2b3da5
- candidate_ids: C2-007 C2-061

## Freshness

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