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← Session 35 — ii′-6-R: Lagarias 6.1 right-tail re-proof (E-032/D-073)

#2216 assistant 2026-08-26 12:12:26.019 UTC · 549→1475 tok open ⤢
thinking (3198 chars)
LiBasePoints compiles cleanly with no changes needed?! Let me think about why: - The Bn evaluations (Bn_FAlt_80000_le : Bn FAlt 80000 ≤ 329000, Bn_FAlt_80000_ge : 274000 ≤ Bn FAlt 80000, Bn_FAlt_100000_le : Bn FAlt 100000 ≤ 350000) — with the new dog-leg Bn: - Bn_new(8e4) ≈ 324,913 (E-034's Bn_DL at 8e4 = 324,912.99) — vs the OLD Bn(8e4) ≈ 322,309 — the new is ~2,600 bigger (the dog-leg's 2·DogLegRight ≈ (√8e4+1)(e^{5/2}+1)/2 + 16.76 + IIMaj/2 ≈ 283.84·6.591+16.76 ≈ 1,888 vs the old 2(e⁴+1)·3.3 ≈ 367 — difference ~1,520 — plus the I_I/dog-leg IIMaj change: 1.5·IIMaj vs 1·IIMaj — +0.5·IIMaj ≈ +1,295 (the coarse 4.56(√n+1)·2 form ~2,590). Total ~+2,815. So Bn_new(8e4) ≈ 325,124 (E-034 says 324,913). The OLD certified bounds: Bn_FAlt_80000_le ≤ 329,000 ✓ (325,124 < 329,000 ✓ still holds!) and Bn_FAlt_80000_ge ≥ 274,000 ✓ (325,124 > 274,000 ✓ still holds!). - Bn_FAlt_100000_le ≤ 350,000: Bn_new(10⁵) ≈ 344,838 (E-034's Bn_DL = 344,838.45) < 350,000 ✓ still holds. BUT — the old proofs PROVE those bounds by unfolding Bn and bounding each term — with the new Bn's horizontal share CHANGED (2(e⁴+1)(7Ĥ) + 2·DogLegRight vs old 2(e⁴+1)(7Ĥ+3.3)), the old proofs' `simp only [Bn]` + term-bounds DON'T directly apply... — unless the old proofs' structure still works: they bound the OLD share 2·(54.6015+1)·(7·Ĥ+3.3) — with the new share being 2·(e⁴+1)·7Ĥ + 2·DogLegRight — the old proofs would need to bound DogLegRight — which they DON'T. So why did it compile?! OH — because `simp only [Bn]` unfolds Bn to its NEW form, and the old proofs' subsequent steps bound the pieces — if the new form's pieces don't match the old proof's `have hterm2/hterm4` structure... — hmm, but it COMPILED. Let me check: maybe the old proofs' `simp only [Bn]` + `linarith [hFAlt, hterm2, hterm4, hII]` — the hterm4 bounds `2·(e⁴+1)·(7·Ĥ+3.3)` — but the new Bn has `2·(e⁴+1)·(7·Ĥ) + 2·DogLegRight` — the old hterm4's LHS form doesn't match the new Bn's form... — the `simp only [Bn]` gives the new form, and the linarith with the OLD hterm4 (proving 2(e⁴+1)(7Ĥ+3.3) ≤ X) — that's NOT the new form's term!! — so how does it compile?? Wait — maybe the old proof's hterm4 is `2 * (Real.exp 4 + 1) * (7 * Hhat (√n+1) + 3.3) ≤ ...` — and the new Bn has `2 * (Real.exp 4 + 1) * (7 * Hhat (√n+1))` (no 3.3) + `2 * DogLegRight n` — the simp only [Bn] gives the new form; then linarith [hFAlt, hterm2, hterm4, hII] with hterm4 about the OLD form — hterm4 proves `2(e⁴+1)(7Ĥ+3.3) ≤ Y` — that's NOT a subterm of the new Bn (the new Bn has 2(e⁴+1)·7Ĥ which is SMALLER than 2(e⁴+1)(7Ĥ+3.3) ✓ hterm4's bound covers it: 2(e⁴+1)·7Ĥ ≤ 2(e⁴+1)(7Ĥ+3.3) ≤ Y ✓ linarith can use it: the new share = 2(e⁴+1)·7Ĥ + 2·DogLegRight ≤ Y + 2·DogLegRight — but hterm4 bounds the OLD share ≤ Y — so the new share ≤ Y − 2(e⁴+1)·3.3 + 2·DogLegRight — linarith needs a bound on 2·DogLegRight — WHICH THE OLD PROOF DOESN'T HAVE!!! So the linarith [hFAlt, hterm2, hterm4, hII] should FAIL to prove Bn_new ≤ 329,000 (it lacks the DogLegRight bound)... — but it COMPILED?! Let me verify LiBasePoints REALLY compiled (no output from lake env lean — exit 0?). Let me double-check with an explicit exit check and a full root build.
LiBasePoints compiled clean?! Verifying with an explicit exit check and the full build.
tool: Bash ok
input
{
  "command": "cd D:/Python/Quantum/research/lean/NguyenRH1 && export PATH=\"$HOME/.elan/bin:$PATH\" && lake env lean NguyenRH1/LiBasePoints.lean 2>&1 | tail -2; echo \"EXIT: $?\"; lake build NguyenRH1 2>&1 | tail -2",
  "description": "Verify LiBasePoints + full build status",
  "timeout": 600000
}
result 2026-08-26 12:12:26Z → 2026-08-26 12:17:42Z
EXIT: 0
- NguyenRH1.LiBasePoints
error: build failed
raw content_json (database row)
[{"type":"thinking","thinking":"LiBasePoints compiles cleanly with no changes needed?! Let me think about why:\n- The Bn evaluations (Bn_FAlt_80000_le : Bn FAlt 80000 ≤ 329000, Bn_FAlt_80000_ge : 274000 ≤ Bn FAlt 80000, Bn_FAlt_100000_le : Bn FAlt 100000 ≤ 350000) — with the new dog-leg Bn:\n  - Bn_new(8e4) ≈ 324,913 (E-034's Bn_DL at 8e4 = 324,912.99) — vs the OLD Bn(8e4) ≈ 322,309 — the new is ~2,600 bigger (the dog-leg's 2·DogLegRight ≈ (√8e4+1)(e^{5/2}+1)/2 + 16.76 + IIMaj/2 ≈ 283.84·6.591+16.76 ≈ 1,888 vs the old 2(e⁴+1)·3.3 ≈ 367 — difference ~1,520 — plus the I_I/dog-leg IIMaj change: 1.5·IIMaj vs 1·IIMaj — +0.5·IIMaj ≈ +1,295 (the coarse 4.56(√n+1)·2 form ~2,590). Total ~+2,815. So Bn_new(8e4) ≈ 325,124 (E-034 says 324,913). The OLD certified bounds: Bn_FAlt_80000_le ≤ 329,000 ✓ (325,124 < 329,000 ✓ still holds!) and Bn_FAlt_80000_ge ≥ 274,000 ✓ (325,124 > 274,000 ✓ still holds!).\n  - Bn_FAlt_100000_le ≤ 350,000: Bn_new(10⁵) ≈ 344,838 (E-034's Bn_DL = 344,838.45) < 350,000 ✓ still holds.\n  \n  BUT — the old proofs PROVE those bounds by unfolding Bn and bounding each term — with the new Bn's horizontal share CHANGED (2(e⁴+1)(7Ĥ) + 2·DogLegRight vs old 2(e⁴+1)(7Ĥ+3.3)), the old proofs' `simp only [Bn]` + term-bounds DON'T directly apply... — unless the old proofs' structure still works: they bound the OLD share 2·(54.6015+1)·(7·Ĥ+3.3) — with the new share being 2·(e⁴+1)·7Ĥ + 2·DogLegRight — the old proofs would need to bound DogLegRight — which they DON'T. So why did it compile?!\n\nOH — because `simp only [Bn]` unfolds Bn to its NEW form, and the old proofs' subsequent steps bound the pieces — if the new form's pieces don't match the old proof's `have hterm2/hterm4` structure... — hmm, but it COMPILED. Let me check: maybe the old proofs' `simp only [Bn]` + `linarith [hFAlt, hterm2, hterm4, hII]` — the hterm4 bounds `2·(e⁴+1)·(7·Ĥ+3.3)` — but the new Bn has `2·(e⁴+1)·(7·Ĥ) + 2·DogLegRight` — the old hterm4's LHS form doesn't match the new Bn's form... — the `simp only [Bn]` gives the new form, and the linarith with the OLD hterm4 (proving 2(e⁴+1)(7Ĥ+3.3) ≤ X) — that's NOT the new form's term!! — so how does it compile??\n\nWait — maybe the old proof's hterm4 is `2 * (Real.exp 4 + 1) * (7 * Hhat (√n+1) + 3.3) ≤ ...` — and the new Bn has `2 * (Real.exp 4 + 1) * (7 * Hhat (√n+1))` (no 3.3) + `2 * DogLegRight n` — the simp only [Bn] gives the new form; then linarith [hFAlt, hterm2, hterm4, hII] with hterm4 about the OLD form — hterm4 proves `2(e⁴+1)(7Ĥ+3.3) ≤ Y` — that's NOT a subterm of the new Bn (the new Bn has 2(e⁴+1)·7Ĥ which is SMALLER than 2(e⁴+1)(7Ĥ+3.3) ✓ hterm4's bound covers it: 2(e⁴+1)·7Ĥ ≤ 2(e⁴+1)(7Ĥ+3.3) ≤ Y ✓ linarith can use it: the new share = 2(e⁴+1)·7Ĥ + 2·DogLegRight ≤ Y + 2·DogLegRight — but hterm4 bounds the OLD share ≤ Y — so the new share ≤ Y − 2(e⁴+1)·3.3 + 2·DogLegRight — linarith needs a bound on 2·DogLegRight — WHICH THE OLD PROOF DOESN'T HAVE!!!\n\nSo the linarith [hFAlt, hterm2, hterm4, hII] should FAIL to prove Bn_new ≤ 329,000 (it lacks the DogLegRight bound)... — but it COMPILED?! Let me verify LiBasePoints REALLY compiled (no output from lake env lean — exit 0?). Let me double-check with an explicit exit check and a full root build.","signature":""},{"type":"text","text":"LiBasePoints compiled clean?! Verifying with an explicit exit check and the full build."},{"type":"tool_use","id":"Bash_621","name":"Bash","input":{"command":"cd D:/Python/Quantum/research/lean/NguyenRH1 && export PATH=\"$HOME/.elan/bin:$PATH\" && lake env lean NguyenRH1/LiBasePoints.lean 2>&1 | tail -2; echo \"EXIT: $?\"; lake build NguyenRH1 2>&1 | tail -2","description":"Verify LiBasePoints + full build status","timeout":600000},"extra_content":null}]