# LIB2-252 — Withdrawn canonical reactor half-angle from the moment law

- class: RETIRED · review_state: PUBLISHED · 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

Earlier wording treated the reactor half-angle as canonical solely by appeal to the symplectic moment half-turn law.

## Caution

The retraction leaves the moment law and the numerical reactor formula intact while withholding a derivation of its readout rule.

## Primary source

Appendix B, The T-bridge does not canonicalize the half-angle, PDF p.160: "Earlier wording made the half-angle π/8 canonical by appeal to T 2 = −1. That inference is withdrawn."

## Machine

- url: /library-v2/LIB2-252/
- content_sha256: 9944e66bdcaac81052e50f9bbe16fdfa0199b5b3f16f973b411d4e04c6225385
- candidate_ids: C2-006 C2-060

## Freshness

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