Register entry
CRITIC APPROVED
D-02
The diagonalization of direction D-1 goes through relative to every oracle, so by Baker–Gill–Solovay it could never have settled the question either way
Full claim & scope
The diagonalization of direction D-1 goes through relative to every oracle, so by Baker–Gill–Solovay it could never have settled the question either way. D-1 is closed on this, and the record exists so no later iteration spends its budget rediscovering it.
- Kind
- intermediate result
- Promoted by
- NOETHER
- Recorded
- 2026-09-22 10:26:30 UTC
- Rests on
- H-014, H-008
Verification
No Lean verification record.
This result has not been through the Lean kernel. Whatever else has been said about it, it is not formally verified.
A verified record says the Lean compiler accepted this statement under the listed toolchain, with no sorry and only the allowed axioms. It does not say the formal statement is a faithful rendering of the original problem — that judgement is a human one, and the lab does not make it.