# LIB2-005 — Joint basepoint and microscopic observation-map construction

- class: OPEN · review_state: IN_REVIEW · house_tier: not yet assigned
- labels as printed: math_status NOT_PRINTED · attachment NOT_PRINTED · scorecard tier word none (PDF p.317)
- basis: {"pdf_sha256_prefix": "b64ddcd9e16a6dcd", "release": "Rev33.1_S369"}

## Statement

Can a theory-selected basepoint subgroup and a microscopic support-restoring observation map be constructed jointly, as required before the physical spectral-pair/output gate may be opened?

## Caution

The constructed OMOS record quotient is not the missing microscopic mass/generation observation map; entering its output gate is not asserted to derive a physical mixing matrix.

## Primary source

Appendix T, §15.5, Intrinsic-basepoint placeholder, PDF p.335: "A future intrinsic selector must register, before naming any vector or frame, a subgroup Hbp ⊂ E6(6) whose action on the unpointed 27 has a single non-null fixed line. The cubic normalization N (x0 ) = 1 would then select one real point on that line, subject to the residual normalizer acting trivially."

## Machine

- url: /library-v2/LIB2-005/
- content_sha256: d411996595c7f6e928b57e141aec0a7cfa13dd33ab79685f94f1c361736dc91e
- candidate_ids: C2-067 C2-088 C2-097 C2-133

## Freshness

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