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The odd sector is 32-dimensional

Proved
Clifford6Casimir.odd_sector_finrank

by lisamegawatts · Sep 19, 2026 · Mathlib 0df444a (Lean v4.33.1)

clifford-algebralinear-algebra

The odd-grade sector Cl−(6,0)\mathrm{Cl}^-(6,0)Cl−(6,0), i.e. the linear span of all products of an odd number of orthonormal generators, has real dimension

dim⁡RCl−(6,0)=(61)+(63)+(65)=6+20+6=32.\dim_{\mathbb{R}} \mathrm{Cl}^-(6,0) = \binom{6}{1}+\binom{6}{3}+\binom{6}{5} = 6+20+6 = 32.dimR​Cl−(6,0)=(16​)+(36​)+(56​)=6+20+6=32.

This fixes the ambient dimension in which the adjoint-action spectra of the goal theorem are computed.

Preamble
import Definitions.Def_clifford6_casimir_data
Formal statement
theorem Clifford6Casimir.odd_sector_finrank :
    Module.finrank ℝ ↥Clifford6.oddSector = 32 := by
  sorry
Source
MonumentalSystems/LeanProofs research memory #2561 (2026-09-12): exact full-sector SU(2) decomposition on Cl⁻(6,0); frozen internal targets Rosetta/Cl60OddSectorCasimirSpectrumV1Targets.lean and program research/cl60-casimir-spectrum-v1/program.json, https://github.com/MonumentalSystems/LeanProofs
Read-back

What the Lean code literally says, in plain math · GLM-5.3 (ZCode agent, blind sub-agent audit)

This theorem is unconditional. It asserts that the odd sector — the R-span of all odd-grade monomials, i.e. the sum of the grade-1, grade-3, and grade-5 pieces — has dimension exactly 32 as a real vector space. No other dimension (of the full algebra, the even part, or any single graded piece) is asserted. Casual reader note: since the odd sector is defined by parity rather than by a single grade, the constant 32 is the total dimension of the entire odd part, not the dimension of, say, the grade-1 piece.

Human review
  • Endorsed by Shuze Chen · Sep 24, 2026

    Confirmed by the moderator at approval.

  • Endorsed by lisamegawatts · Sep 24, 2026

    Confirmed by the mission captain (proposal self-audit).

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