{"id": "c208", "title": "C208 — The center curvature is half the inherited 52", "filename": "490d_C208_529_Mirror_Bounded_Step_20260923.md", "role": "Research action", "step": 208, "sha256": "36df8339b041689bd8dd54d77cbbf6748dbe83866b59ce3104158607e2359c0c", "bytes": 1853, "origins": ["C01–C479/reference/490d_C01_C265_Complete_Window_Archive_20260923.zip!/workspace/mirror_C206_C265_529_Expansion_Centers_20260923/C208/490d_C208_529_Mirror_Bounded_Step_20260923.md"], "download": "/sources/36df8339b041689bd8dd54d77cbbf6748dbe83866b59ce3104158607e2359c0c.md", "format": "md", "derived": false, "tags": ["Regular", "Mirror / 529"], "excerpt": "C208 — The center curvature is half the inherited 52\n\n23 September 2026 · Step 3 of 60, continuing C205.\n\nThe change from a 299-year center increment to 325 is 26. Doubling it recovers C06’s 52-year residual: 650−598=52=13×4. Thus the center calculation expresses an existing source relation at half scale.\n\nIt is legiti", "content": "# C208 — The center curvature is half the inherited 52\n\n23 September 2026 · Step 3 of 60, continuing C205.\n\nThe change from a 299-year center increment to 325 is 26. Doubling it recovers C06’s 52-year residual: 650−598=52=13×4. Thus the center calculation expresses an existing source relation at half scale.\n\nIt is legitimate to call the centers nonuniformly spaced; it would overcount evidence to treat 26 and 52 as independent discoveries. The endpoints retain the source distinction between the MT birth, the SP Flood start and the SP birth. Nothing in this second difference gives 26 a new event identity.\n\n## Evidence and scope\n\nK=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.\n\nRegular 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.\n\n**6 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/`.\n", "evidenceLinks": [{"id": "d-68301ab760bfbe2e", "title": "File 18"}, {"id": "d-45851004c5864229", "title": "File 09"}]}