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C149 — The exact rows pair Noah with the next Flood Gear

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Study sequence: Finite 17K squares, P6 boundary and one residual (C129–C155) · Mirror & 529

C149 — The exact rows pair Noah with the next Flood Gear

23 September 2026 · Bounded step 14 of 20 (C136–C155).

The four exact rows have a specific selector structure: the MT Flood Gear is one above the SP Noah Gear, and the companion/close bits numerically match. This is stronger than a bare equality of interval lengths, while preserving the distinction between those two kinds of event state.

Let gN be the SP Noah Gear, cN its companion bit; let gF be the MT Flood Gear, cF its close bit. Source tables give

X=3704+2gN−cN,M=2644+2gF−cF, X=3704+2g_N-c_N,\qquad M=2644+2g_F-c_F, δ=2(gN−gF+1)+cF−cN. \delta=2(g_N-g_F+1)+c_F-c_N.

Because cN and cF are 0 or 1, δ=0 requires gF=gN+1 and cF=cN.

Exact rowSP NoahAlternate MT Flood
N01G1 companionG2 close
N02G1 primaryG2 start
N03G2 companionG3 close
N04G2 primaryG3 start

At P6, Noah is already G3 companion. An exact selector continuation would exceed the allowed three-Gear Flood domain; it is not licensed. The nearest admitted Flood is G3 start, giving δ=1. No fourth Gear is introduced.

Equal bits are a correspondence between two distinct source selectors. Flood closes remain event-year boundaries; they are not Noah/Shem companions. Creation and Conquest receive no Gear. This typed result explains the finite upper-boundary failure without recasting it as a calendar error.

Source and scope control

All numerical bases in this packet stand for paired coordinates: BC base B is (B+1)t/Bn BC; reflected AD base A is AD At/(A+1)n. Thus a cross-Mirror same-season span is B+A, after the civil no-year-zero subtraction. AD stations are reflected source events, not historical AD occurrences. K=529 throughout.

Regular Gears remain restricted to Noah/Shem/Flood. Creation and Conquest are fixed source-field selections. C133–C135 corrections remain controlling. The C127 graph and canonical controls are frozen; source-field admission is distinguished from an existing graph node and from a generated comparison coordinate. No wider N01/N03 expansion or missing N03 Shem join is repaired. Original Reports 01–10 remain previously verified references; interrupted original Reports 11–25 remain unestablished. Check counts are computational assertions, not independent historical witnesses.

Evidence: CERTIFICATE.json; 78 passing assertions in RESULTS.json. The assertion list identifies the actual tests.

Edition and provenance

490d_C149_529_Mirror_Bounded_Step_20260923.md

SHA-256 4f633b8134b8b1d12cdad7f97728f1bfc2c944c9b9af1f2664dc1e1d4e6d1c45

C01–C479/reference/490d_C01_C265_Complete_Window_Archive_20260923.zip!/workspace/mirror_C136_C155_529_Square_Batch_20260923/C149/490d_C149_529_Mirror_Bounded_Step_20260923.md