# C201 — The source interval center divides the diagonal-center gap as 868+190

23 September 2026 · Step 46 of 50, continuing C155.

**At each exact common row, the Creation/Flood interval's center divides the1058-year separation of the two17K diagonal centers into868+190.** This is the clearest geometric interpretation of the offsets audited at C156.

\[
\mu_{MT}\ \xrightarrow{\ 868+\delta/2\ }\ \mu_{13}
\ \xrightarrow{\ 190+\delta/2\ }\ \mu_{SP}.
\]

| Row | MT diagonal center | Creation/Flood center | SP diagonal center | Two gaps |
|---|---|---|---|---|
| N01 | -3699/2 | -1963/2 | -1583/2 | 868 + 190 |
| N02 | -3697/2 | -1961/2 | -1581/2 | 868 + 190 |
| N03 | -3695/2 | -1959/2 | -1579/2 | 868 + 190 |
| N04 | -3693/2 | -1957/2 | -1577/2 | 868 + 190 |
| P6 | -3693/2 | -978 | -1575/2 | 1737/2 + 381/2 |

For P6, the residual splits equally between the center gaps:868.5+190.5=1059. The endpoints remain exactly the admitted source pairs; no endpoint is moved by half a year. The halves arise from calculating interval midpoints.

The center partition is mathematically dependent on the source intervals and their alignment. It gives the868/190 accounting a useful geometry without treating the three geometric centers as new biblical events.

## Evidence and scope

K=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.

Regular 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.

Sources: 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. **79 assertions passed**; see `RESULTS.json` and `CERTIFICATE.json`. Assertions, selected field combinations and inherited identities are not independent historical witness counts.