{"id": "c259", "title": "C259 — The same six selections realize the inherited δ=2 square", "filename": "490d_C259_529_Mirror_Bounded_Step_20260923.md", "role": "Research action", "step": 259, "sha256": "981d89bcc184014ef69922362250e99734a185a59ce45124ecae1638d48e1859", "bytes": 2277, "origins": ["C01–C479/reference/490d_C01_C265_Complete_Window_Archive_20260923.zip!/workspace/mirror_C206_C265_529_Expansion_Centers_20260923/C259/490d_C259_529_Mirror_Bounded_Step_20260923.md"], "download": "/sources/981d89bcc184014ef69922362250e99734a185a59ce45124ecae1638d48e1859.md", "format": "md", "derived": false, "tags": ["Regular", "Cumulative", "Mirror / 529"], "excerpt": "C259 — The same six selections realize the inherited δ=2 square\n\n23 September 2026 · Step 54 of 60, continuing C205.\n\nAdding the retained +190 MT profile counterpart gives six δ=2 squares. Their equal sides are 1060=2K+2; the cross-width matrix is 17K,19K+2,15K−2,17K.\n\n| s | LXX ON Shem BC | LXX OFF Flood BC | Alternat", "content": "# C259 — The same six selections realize the inherited δ=2 square\n\n23 September 2026 · Step 54 of 60, continuing C205.\n\nAdding the retained +190 MT profile counterpart gives six δ=2 squares. Their equal sides are 1060=2K+2; the cross-width matrix is [[17K,19K+2],[15K−2,17K]].\n\n| s | LXX ON Shem BC | LXX OFF Flood BC | Alternate MT Flood AD | SP Noah AD | First center gap | Second center gap |\n|---|---|---|---|---|---|---|\n| 2 | 6348 | 5288 | 2645 | 3705 | 869 | 191 |\n| 3 | 6347 | 5287 | 2646 | 3706 | 869 | 191 |\n| 4 | 6346 | 5286 | 2647 | 3707 | 869 | 191 |\n| 5 | 6345 | 5285 | 2648 | 3708 | 869 | 191 |\n| 6 | 6344 | 5284 | 2649 | 3709 | 869 | 191 |\n| 7 | 6343 | 5283 | 2650 | 3710 | 869 | 191 |\n\nThe center partition is 869+191=1060. This specializes the inherited C201 grammar; it is not the exact δ=0 /1058 square. The source relation 1060=600+460 uses the same-index cumulative Shem/Flood separation and retained profile displacement. Source-field support does not imply that every displayed node is already stored in C127.\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**31 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"}]}