# LIB2-272 — Superseded cylinder-prefactor proof prompt for the bottom mass

- 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

The archived proof prompt proposed deriving the bottom-mass prefactor from the Peirce cylinder.

## Caution

A title-level replacement does not establish that the absent prefactor proof was executed or mathematically disproved.

## Primary source

Paper 2, §3.6, Current bottom boundary value and offset, PDF p.38: "The mb row must be quoted with its offset: mb = (7/3)mτ = 4146 MeV against PDG 2026 mb (mb ) = 4186 ± 6 MeV is −0.95% and dcmp = −6.64 (cross-scheme, no status; full precision, Rev32.9)."

## Machine

- url: /library-v2/LIB2-272/
- content_sha256: 1e84b7b701a82720d60adeaf05a2d5a4a8e055d94a36611c6afb7df957da668e
- candidate_ids: C2-021

## Freshness

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