{"id": "c200", "title": "C200 — The two 17K diagonal centers are separated by the square side", "filename": "490d_C200_529_Mirror_Bounded_Step_20260923.md", "role": "Research action", "step": 200, "sha256": "cf92171f72851c9f594788abc73baabd6d08f39b89cc93cce1424ec2132449f5", "bytes": 2078, "origins": ["C01–C479/reference/490d_C01_C265_Complete_Window_Archive_20260923.zip!/workspace/mirror_C156_C205_529_Source_Grammar_20260923/C200/490d_C200_529_Mirror_Bounded_Step_20260923.md"], "download": "/sources/cf92171f72851c9f594788abc73baabd6d08f39b89cc93cce1424ec2132449f5.md", "format": "md", "derived": false, "tags": ["Regular", "Mirror / 529"], "excerpt": "C200 — The two 17K diagonal centers are separated by the square side\n\n23 September 2026 · Step 45 of 50, continuing C155.\n\nWhen the two diagonals are equal, the separation of their centers equals the common side width2K+δ. More generally,\n\n\\\n\\mu_SP-\\mu_MT=2K+\\delta+\\frac\\beta-\\alpha2,\n\\qquad\\mu_MT=(M-U)/2.\n\\\n\nThe four ", "content": "# C200 — The two 17K diagonal centers are separated by the square side\n\n23 September 2026 · Step 45 of 50, continuing C155.\n\n**When the two diagonals are equal, the separation of their centers equals the common side width2K+δ.** More generally,\n\n\\[\n\\mu_{SP}-\\mu_{MT}=2K+\\delta+\\frac{\\beta-\\alpha}{2},\n\\qquad\\mu_{MT}=(M-U)/2.\n\\]\n\nThe four exact squares therefore have two8993-year intervals whose centers are1058 years apart. P6 has the same8993-year diagonal widths but centers1059 apart. Equal diagonal lengths do not imply equal centers or coincident intervals.\n\nThis provides a second geometric way to read the square's side residual, without adding a historical event or changing either source diagonal. The next step places the sourced Creation/Flood interval's center between those two centers.\n\n## Evidence and scope\n\nK=529. Positive BC base B denotes (B+1)t/Bn BC; reflected AD base A denotes AD At/(A+1)n. Their same-season civil span is B+A, after the no-year-zero correction. AD source projections are not historical AD occurrences. Generated coordinates and interval midpoints do not acquire event identity from numerical coincidence.\n\nRegular Gears remain confined to Noah/Shem/Flood. Creation and Conquest use fixed source-field members; no fourth Gear is admitted. File_18/File_09 and the C127 graph are unchanged. C133–C155 source corrections remain controlling, with the C10 ancestry of the next-Flood-Gear rule now explicit. No historical campaign is rerun, no quarantined primer is reopened, and no N01/N03 expansion or missing Shem join is repaired. Original Reports 01–10 remain previously verified; interrupted original Reports 11–25 remain unestablished.\n\nSources: controlling File_18 §§2–3, 6A–6D; File_09 paired Mirror rules; selectively retained C05, C08, C10, C123, C128 and C133–C155 evidence. Specific dependencies are named in the body/certificate. **60 assertions passed**; see `RESULTS.json` and `CERTIFICATE.json`. Assertions, selected field combinations and inherited identities are not independent historical witness counts.\n", "evidenceLinks": [{"id": "d-68301ab760bfbe2e", "title": "File 18"}, {"id": "d-45851004c5864229", "title": "File 09"}]}