C213 — The MT 17-fold center supplies a second fixed reference
23 September 2026 · Step 8 of 60, continuing C205.
The retained alternate-MT 17-fold interval has a fixed center 868 years before the initial 13-fold center. As the latter moves, the separation becomes 1167 and then 1492.
| Chain | Fixed MT 17-fold center | Successive 13-centers minus MT center |
|---|---|---|
| 3 | -3697/2 | [Fraction(868, 1), Fraction(1167, 1), Fraction(1492, 1)] |
| 5 | -3693/2 | [Fraction(868, 1), Fraction(1167, 1), Fraction(1492, 1)] |
Together with C212, this gives 868+190=1058 only at the original stage. At later stages the same 1058 gap between the two fixed 17-fold centers is expressed as 1167−109 or 1492−434. These are dependent center partitions of the same fixed separation.
Evidence and scope
K=529 and r=25/23. BC base B means (B+1)t/Bn BC; reflected AD base A means AD At/(A+1)n. Their civil span is B+A in both seasonal components, with no year zero. Signed paired centers are −B and +A; the center model uses components ±1/4 and restores this separation after dilation. An interval center is geometry, not an event or a proposed universal Mirror axis.
Regular Gears are restricted to Noah/Shem/Flood. Creation and Conquest retain fixed source-field members; no fourth Gear is admitted. Generated coordinates, source-field membership and stored graph incidence are distinct. File_18/File_09 and the frozen C127 graph are unchanged. Earlier N01/N03 qualifications, the missing Shem join, closed primers and unestablished original Reports 11–25 remain unchanged. This packet selectively uses prior evidence; it does not rerun completed campaigns. Assertions and alternative placements are not independent historical witness counts.
4 step-specific checks and 19 frozen-input checks passed. Exact inputs, results and predecessor hashes are in the accompanying JSON records; calculation code is in the evidence archive. Source dependencies are identified in the body and frozen in sources/.