HA + independent Lean evidence · Research, not Alpha admission

NG001 — natural gap

Full irrationality (IR072/G121) remains open. Stable: 432. Alpha v35: 4,318. This checkpoint changes neither catalogue.

Exact named statement

∀ x. ∀ y. ¬x = y → ∃ z. x + S z = y ∨ y + S z = x

No displayed named abbreviation.

Fully expanded target AST

Complete certificate and independent checks

3 actual local proof nodes. Each node carries its complete ordinary HA proof body.

Full canonical proof bundle · Original HA receipt · Independent Lean receipt

Target SHA-256: f0598e325456d7992079c20535c5d15740fb9f4a35c1a2619d5983c7ac9ac64b
Bundle SHA-256: e614473e462f9589988e7526d85de6427c03caca9edc9fc8ca5285514d1b1cc5

Checked statement containment

These exact targets occur inside this certificate. These links summarize containment, not direct dependency arrows; the downloadable bundle records every private lemma and ordered edge.

Scope

universal natural gap not full campaign

None of these finite arithmetic statements closes an IR campaign parent. The analytic identification, interpolation and final positive irrationality certificate remain open.