← Session 36 — ii′-6-DL dog-leg + side bounds; Paper A review
thinking (4095 chars)
Only one error at 1239 — the hInt2's ContinuousOn proof. The issue: `ContinuousOn f s := ∀ x ∈ s, ContinuousWithinAt f s x` — when I `intro σ hσ`, the expected type is `ContinuousWithinAt (fun σ => Jlag n (↑σ+↑T·I)) (Set.Icc 3 (2√n)) σ` — but I produced `ContinuousWithinAt (Jlag ?n) ?s (↑σ+↑T·I)` with the SET undetermined (?m.623) and the function as Jlag directly (not composed with the path). The mismatch: my term's function is `Jlag n` (on ℂ) vs expected `(fun σ => Jlag n (↑σ+↑T·I))` (on ℝ) — the COMPOSITION with the path map is missing! ContinuousOn (fun σ => Jlag n (path σ)) (Icc) — I need ContinuousWithinAt of the COMPOSED function, not of Jlag itself.
ContinuousOn f s unfolds to ∀ x ∈ s, ContinuousWithinAt f s x. The f here is `fun σ => Jlag n (↑σ+↑T·I)` — the path-composed function. So I need: ContinuousWithinAt (fun σ => Jlag n (↑σ+↑T·I)) (Icc 3 (2√n)) σ — from ContinuousAt (Jlag n) (path σ) and the path's continuity: ContinuousWithinAt.comp or: (hJcontT σ).continuousWithinAt — no — that's ContinuousWithinAt (Jlag n) s' (path σ) — the DOMAIN is ℂ, not ℝ. I need composition: ContinuousWithinAt (Jlag n ∘ path) (Icc) σ = (ContinuousWithinAt (Jlag n) (path '' Icc) (path σ)).comp (ContinuousWithinAt path (Icc) σ)?? — `ContinuousWithinAt.comp (hg : ContinuousWithinAt g t (f x)) (hf : ContinuousWithinAt f s x) (h : Set.MapsTo f s t) : ContinuousWithinAt (g ∘ f) s x` ✓ exists.
So:
```lean
intro σ hσ
obtain ⟨hσ1, hσ2⟩ := hσ
have hre : ... ; have him : ...
have hg : ContinuousWithinAt (Jlag n) (Set.range fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I))
((σ : ℝ) + (T : ℝ) * Complex.I) :=
(Jlag_differentiableAt_dogleg (s := ...) (by rw [hre]; exact hσ1)
(by rw [him]; exact hT0)).continuousAt.continuousWithinAt
have hfp : ContinuousWithinAt (fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I))
(Set.Icc 3 (2 * Real.sqrt (n : ℝ))) σ := hpath.continuousWithinAt
have hmap : Set.MapsTo (fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I))
(Set.Icc 3 (2 * Real.sqrt (n : ℝ))) (Set.range fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I)) :=
Set.mapsTo_range _ _
exact (hg.comp hfp hmap)
```
Hmm — ContinuousWithinAt.comp signature: `theorem ContinuousWithinAt.comp {g : β → γ} {f : α → β} {s : Set α} {t : Set β} {x : α} (hg : ContinuousWithinAt g t (f x)) (hf : ContinuousWithinAt f s x) (h : Set.MapsTo f s t) : ContinuousWithinAt (g ∘ f) s x` ✓.
Then the result: ContinuousWithinAt (Jlag n ∘ path) (Icc) σ — vs expected ContinuousWithinAt (fun σ => Jlag n (path σ)) (Icc) σ — defeq (∘) ✓.
Alternatively — simpler: hg's set can be `Set.univ` (ContinuousAt gives ContinuousWithinAt at univ... — continuousWithinAt is at the point with the ambient set — from DifferentiableAt.continuousAt I get ContinuousAt (Jlag n) (path σ) — .continuousWithinAt : ContinuousWithinAt (Jlag n) s (path σ) for ANY s?? — ContinuousAt.continuousWithinAt : ContinuousWithinAt f s x — any s ✓ (continuousAt implies continuousWithinAt at every set). So hg : ContinuousWithinAt (Jlag n) (range path) (path σ) := ....continuousWithinAt ✓ as I wrote. Then comp with MapsTo range ✓.
Or EVEN simpler — skip ContinuousWithinAt.comp: use the global continuity instead? — no, Jlag isn't globally continuous on the +T path for σ < 1... — the uIcc is [3, 2√n] — restrict to it ✓ the comp route.
Actually — hmm — much simpler: `ContinuousOn` from `Continuous.comp_continuousOn`?? — or: the path is continuous GLOBALLY, Jlag is ContinuousOn {re ≥ 3}... — hmm — `ContinuousOn.comp (hg : ContinuousOn g t) (hf : Continuous f) (h : Set.MapsTo f s t) : ContinuousOn (g ∘ f) s` ✓ — with t := {s : ℂ | 3 ≤ s.re}... — need ContinuousOn (Jlag n) {re ≥ 3} — from Jlag_differentiableAt_dogleg (any im?? — the dogleg version needs him : 0 < im — for the +T path im = T > 0 ✓ but the SET {re ≥ 3} includes im ≤ 0 points where I'd need ζ zero-free on re ≥ 3 — true (re > 1) but the dogleg lemma needs him... — for the comp-ContinuousWithinAt route, hg is at the SINGLE point (σ+iT) with im = T > 0 ✓ fine.
Let me rewrite hInt2's inner proof with the comp route.
The ContinuousOn proof needs the path-composition (`ContinuousWithinAt.comp` with MapsTo range), not the bare differentiability.
tool: Edit
input
{
"replace_all": false,
"file_path": "D:\\Python\\Quantum\\research\\lean\\NguyenRH1\\NguyenRH1\\LiSideBounds.lean",
"old_string": " have hInt2 : IntervalIntegrable (fun \u03c3 : \u211d => Jlag n ((\u03c3 : \u211d) + (T : \u211d) * Complex.I))\n MeasureTheory.volume 3 (2 * Real.sqrt (n : \u211d)) := by\n apply ContinuousOn.intervalIntegrable\n rw [Set.uIcc_of_le h3le]\n intro \u03c3 h\u03c3\n obtain \u27e8h\u03c31, h\u03c32\u27e9 := h\u03c3\n have hre : ((\u03c3 : \u211d) + (T : \u211d) * Complex.I).re = \u03c3 := by simp\n have him : ((\u03c3 : \u211d) + (T : \u211d) * Complex.I).im = T := by simp\n exact (Jlag_differentiableAt_dogleg (s := ((\u03c3 : \u211d) + (T : \u211d) * Complex.I))\n (by rw [hre]; exact h\u03c31) (by rw [him]; exact hT0)).continuousAt.continuousWithinAt",
"new_string": " have hInt2 : IntervalIntegrable (fun \u03c3 : \u211d => Jlag n ((\u03c3 : \u211d) + (T : \u211d) * Complex.I))\n MeasureTheory.volume 3 (2 * Real.sqrt (n : \u211d)) := by\n apply ContinuousOn.intervalIntegrable\n rw [Set.uIcc_of_le h3le]\n intro \u03c3 h\u03c3\n obtain \u27e8h\u03c31, h\u03c32\u27e9 := h\u03c3\n have hre : ((\u03c3 : \u211d) + (T : \u211d) * Complex.I).re = \u03c3 := by simp\n have him : ((\u03c3 : \u211d) + (T : \u211d) * Complex.I).im = T := by simp\n have hg : ContinuousWithinAt (Jlag n)\n (Set.range fun u : \u211d => ((u : \u211d) + (T : \u211d) * Complex.I))\n ((\u03c3 : \u211d) + (T : \u211d) * Complex.I) :=\n (Jlag_differentiableAt_dogleg (s := ((\u03c3 : \u211d) + (T : \u211d) * Complex.I))\n (by rw [hre]; exact h\u03c31) (by rw [him]; exact hT0)).continuousAt.continuousWithinAt\n have hfp : ContinuousWithinAt (fun u : \u211d => ((u : \u211d) + (T : \u211d) * Complex.I))\n (Set.Icc 3 (2 * Real.sqrt (n : \u211d))) \u03c3 := hpath.continuousWithinAt\n exact hg.comp hfp (Set.mapsTo_range _ _)"
}
raw content_json (database row)
[{"type":"thinking","thinking":"Only one error at 1239 — the hInt2's ContinuousOn proof. The issue: `ContinuousOn f s := ∀ x ∈ s, ContinuousWithinAt f s x` — when I `intro σ hσ`, the expected type is `ContinuousWithinAt (fun σ => Jlag n (↑σ+↑T·I)) (Set.Icc 3 (2√n)) σ` — but I produced `ContinuousWithinAt (Jlag ?n) ?s (↑σ+↑T·I)` with the SET undetermined (?m.623) and the function as Jlag directly (not composed with the path). The mismatch: my term's function is `Jlag n` (on ℂ) vs expected `(fun σ => Jlag n (↑σ+↑T·I))` (on ℝ) — the COMPOSITION with the path map is missing! ContinuousOn (fun σ => Jlag n (path σ)) (Icc) — I need ContinuousWithinAt of the COMPOSED function, not of Jlag itself.\n\nContinuousOn f s unfolds to ∀ x ∈ s, ContinuousWithinAt f s x. The f here is `fun σ => Jlag n (↑σ+↑T·I)` — the path-composed function. So I need: ContinuousWithinAt (fun σ => Jlag n (↑σ+↑T·I)) (Icc 3 (2√n)) σ — from ContinuousAt (Jlag n) (path σ) and the path's continuity: ContinuousWithinAt.comp or: (hJcontT σ).continuousWithinAt — no — that's ContinuousWithinAt (Jlag n) s' (path σ) — the DOMAIN is ℂ, not ℝ. I need composition: ContinuousWithinAt (Jlag n ∘ path) (Icc) σ = (ContinuousWithinAt (Jlag n) (path '' Icc) (path σ)).comp (ContinuousWithinAt path (Icc) σ)?? — `ContinuousWithinAt.comp (hg : ContinuousWithinAt g t (f x)) (hf : ContinuousWithinAt f s x) (h : Set.MapsTo f s t) : ContinuousWithinAt (g ∘ f) s x` ✓ exists.\n\nSo:\n```lean\n intro σ hσ\n obtain ⟨hσ1, hσ2⟩ := hσ\n have hre : ... ; have him : ...\n have hg : ContinuousWithinAt (Jlag n) (Set.range fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I))\n ((σ : ℝ) + (T : ℝ) * Complex.I) :=\n (Jlag_differentiableAt_dogleg (s := ...) (by rw [hre]; exact hσ1)\n (by rw [him]; exact hT0)).continuousAt.continuousWithinAt\n have hfp : ContinuousWithinAt (fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I))\n (Set.Icc 3 (2 * Real.sqrt (n : ℝ))) σ := hpath.continuousWithinAt\n have hmap : Set.MapsTo (fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I))\n (Set.Icc 3 (2 * Real.sqrt (n : ℝ))) (Set.range fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I)) :=\n Set.mapsTo_range _ _\n exact (hg.comp hfp hmap)\n```\n\nHmm — ContinuousWithinAt.comp signature: `theorem ContinuousWithinAt.comp {g : β → γ} {f : α → β} {s : Set α} {t : Set β} {x : α} (hg : ContinuousWithinAt g t (f x)) (hf : ContinuousWithinAt f s x) (h : Set.MapsTo f s t) : ContinuousWithinAt (g ∘ f) s x` ✓.\n\nThen the result: ContinuousWithinAt (Jlag n ∘ path) (Icc) σ — vs expected ContinuousWithinAt (fun σ => Jlag n (path σ)) (Icc) σ — defeq (∘) ✓.\n\nAlternatively — simpler: hg's set can be `Set.univ` (ContinuousAt gives ContinuousWithinAt at univ... — continuousWithinAt is at the point with the ambient set — from DifferentiableAt.continuousAt I get ContinuousAt (Jlag n) (path σ) — .continuousWithinAt : ContinuousWithinAt (Jlag n) s (path σ) for ANY s?? — ContinuousAt.continuousWithinAt : ContinuousWithinAt f s x — any s ✓ (continuousAt implies continuousWithinAt at every set). So hg : ContinuousWithinAt (Jlag n) (range path) (path σ) := ....continuousWithinAt ✓ as I wrote. Then comp with MapsTo range ✓.\n\nOr EVEN simpler — skip ContinuousWithinAt.comp: use the global continuity instead? — no, Jlag isn't globally continuous on the +T path for σ < 1... — the uIcc is [3, 2√n] — restrict to it ✓ the comp route.\n\nActually — hmm — much simpler: `ContinuousOn` from `Continuous.comp_continuousOn`?? — or: the path is continuous GLOBALLY, Jlag is ContinuousOn {re ≥ 3}... — hmm — `ContinuousOn.comp (hg : ContinuousOn g t) (hf : Continuous f) (h : Set.MapsTo f s t) : ContinuousOn (g ∘ f) s` ✓ — with t := {s : ℂ | 3 ≤ s.re}... — need ContinuousOn (Jlag n) {re ≥ 3} — from Jlag_differentiableAt_dogleg (any im?? — the dogleg version needs him : 0 < im — for the +T path im = T > 0 ✓ but the SET {re ≥ 3} includes im ≤ 0 points where I'd need ζ zero-free on re ≥ 3 — true (re > 1) but the dogleg lemma needs him... — for the comp-ContinuousWithinAt route, hg is at the SINGLE point (σ+iT) with im = T > 0 ✓ fine.\n\nLet me rewrite hInt2's inner proof with the comp route.","signature":""},{"type":"text","text":"The ContinuousOn proof needs the path-composition (`ContinuousWithinAt.comp` with MapsTo range), not the bare differentiability."},{"type":"tool_use","id":"Edit_149","name":"Edit","input":{"replace_all":false,"file_path":"D:\\Python\\Quantum\\research\\lean\\NguyenRH1\\NguyenRH1\\LiSideBounds.lean","old_string":" have hInt2 : IntervalIntegrable (fun σ : ℝ => Jlag n ((σ : ℝ) + (T : ℝ) * Complex.I))\n MeasureTheory.volume 3 (2 * Real.sqrt (n : ℝ)) := by\n apply ContinuousOn.intervalIntegrable\n rw [Set.uIcc_of_le h3le]\n intro σ hσ\n obtain ⟨hσ1, hσ2⟩ := hσ\n have hre : ((σ : ℝ) + (T : ℝ) * Complex.I).re = σ := by simp\n have him : ((σ : ℝ) + (T : ℝ) * Complex.I).im = T := by simp\n exact (Jlag_differentiableAt_dogleg (s := ((σ : ℝ) + (T : ℝ) * Complex.I))\n (by rw [hre]; exact hσ1) (by rw [him]; exact hT0)).continuousAt.continuousWithinAt","new_string":" have hInt2 : IntervalIntegrable (fun σ : ℝ => Jlag n ((σ : ℝ) + (T : ℝ) * Complex.I))\n MeasureTheory.volume 3 (2 * Real.sqrt (n : ℝ)) := by\n apply ContinuousOn.intervalIntegrable\n rw [Set.uIcc_of_le h3le]\n intro σ hσ\n obtain ⟨hσ1, hσ2⟩ := hσ\n have hre : ((σ : ℝ) + (T : ℝ) * Complex.I).re = σ := by simp\n have him : ((σ : ℝ) + (T : ℝ) * Complex.I).im = T := by simp\n have hg : ContinuousWithinAt (Jlag n)\n (Set.range fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I))\n ((σ : ℝ) + (T : ℝ) * Complex.I) :=\n (Jlag_differentiableAt_dogleg (s := ((σ : ℝ) + (T : ℝ) * Complex.I))\n (by rw [hre]; exact hσ1) (by rw [him]; exact hT0)).continuousAt.continuousWithinAt\n have hfp : ContinuousWithinAt (fun u : ℝ => ((u : ℝ) + (T : ℝ) * Complex.I))\n (Set.Icc 3 (2 * Real.sqrt (n : ℝ))) σ := hpath.continuousWithinAt\n exact hg.comp hfp (Set.mapsTo_range _ _)"},"extra_content":null}]