# C290 author review

Question: Does25/23 act on the whole admitted source pattern and its seasonal pairs?

Conclusion: Fixed25/23 dilation has six offset-anchored Flood center matches but no complete physical-pair transport; it does not preserve the four-node source pattern.

The exact results were inspected against the source register and independently expressed domain identities in the checker. The second run verifies deterministic reproduction, not independent scientific review. No new agent review is claimed.

Limits:

- Center coincidence is weaker than physical-pair transport.
- Per-row anchored dilations are not one global affine map.
- The negative extension result leaves the exact scalar identity intact.

The report and checkpoint are authored interpretations. The verifier authenticates the supplied inputs and calculations; it does not prove historical intentionality. Original dependencies and all standing controls remain unchanged.