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← Session 36 — ii′-6-DL dog-leg + side bounds; Paper A review

#2297 assistant 2026-08-26 19:42:52.966 UTC · 601→1989 tok open ⤢
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}]