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← Session 30 — ii′-5e squeeze capstone + 5f perimeter repair

#1744 assistant 2026-08-24 10:08:04.217 UTC · 2301→5589 tok open ⤢
thinking (9667 chars)
I see the current state. Remaining fixes needed: 1. **hle_pointwise** (lines 360-369): `rw [dirichletTerm_norm_eq n, hh]` then `rcases` — the issue: after rw [dirichletTerm_norm_eq n, hh], the goal for the n=0 case is `(if 0 = 0 then 0 else Λ 0/0²) ≤ h 0`... wait — the rcases produces n := 0 substitution — but the rw happened BEFORE rcases, so for rfl case: dirichletTerm_norm_eq 0... Let me restructure: rcases first, then handle: ```lean have hle_pointwise : ∀ n : ℕ, ‖LSeries.term (fun n => (ArithmeticFunction.vonMangoldt n : ℂ)) (2 : ℂ) n‖ ≤ h n := by intro n rcases eq_or_ne n 0 with rfl | hn · rw [dirichletTerm_norm_eq 0, hh] simp · rw [dirichletTerm_norm_eq n, if_neg hn, hh] show ArithmeticFunction.vonMangoldt n / (n : ℝ) ^ 2 ≤ if n = 0 then (0 : ℝ) else Real.log (n : ℝ) / (n : ℝ) ^ 2 rw [if_neg hn] exact div_le_div_of_nonneg_right ArithmeticFunction.vonMangoldt_le_log (by positivity : (0 : ℝ) ≤ (n : ℝ) ^ 2) ``` The n=0 case: goal ‖term 0‖ ≤ h 0: dirichletTerm_norm_eq 0 gives ‖term 0‖ = if 0 = 0 then 0 else ... = 0 — rw then the goal's LHS becomes (if (0:ℕ) = 0 then (0:ℝ) else ...) — hmm dirichletTerm_norm_eq 0's RHS: `if 0 = 0 then 0 else Λ 0/↑0²` — rw replaces ‖term 0‖ with that if. And h 0 after rw [hh]: (fun n => if n = 0 then ...) 0 = if 0 = 0 then 0 else ... Then `simp` should close: if_pos rfl both sides → 0 ≤ 0 ✓. So: ```lean · rw [dirichletTerm_norm_eq 0, hh] simp ``` The error at line 357 area was "if n = 0 then..." pattern not found because the rw order was wrong (rw before rcases with n unsubstituted... actually the error was in the inr case: after rw [dirichletTerm_norm_eq n, hh], goal: Λ n/↑n² ≤ (fun n => if n = 0 then ...) n — the redex — my `rw [if_neg hn, if_neg hn]` failed since the if is under the redex. The show fixes it. For the inl case (rfl): goal after rw [dirichletTerm_norm_eq 0, hh]: (if (0:ℕ)=0 then 0 else Λ 0/↑0^2) ≤ (fun n => ...) 0 — hmm the RHS redex: `simp` should evaluate both (if_pos + beta + the h-def if) — `simp` closes 0 ≤ 0 ✓. Hmm — will simp evaluate (fun n => if n = 0 then (0:ℝ) else ...) 0? simp beta-reduces and if_pos ✓. OK. 2. **hsumh's h1** (lines 372-380): `apply summable_log_div_sq_tail.congr; intro n` — Summable.congr (hf : Summable f) (h : ∀ i, f i = g i) : Summable g — with f = the tail's fn, g = (fun n => h (n+4)): the pointwise goal: f n = g n: `Real.log (↑n+4)/(↑n+4)² = h (n+4)` — my current show has it flipped: `show (if ...) = Real.log (↑n+4)/...` — the goal is `Real.log (↑n+4)/(↑n+4)² = h (n+4)` — wait which order? apply summable_log_div_sq_tail.congr: summable_log_div_sq_tail : Summable g' where g' = fun n => log (↑n+4)/(↑n+4)²; congr : Summable f → (∀ i, f i = g i) → Summable g — apply ... .congr to goal Summable (fun n => h (n+4)): unifies g := (fun n => h (n+4)), f := g' (from the lemma's type). Then intro n: goal f n = g n: `Real.log (↑n+4)/(↑n+4)² = (fun n => h (n+4)) n` = h (n+4). After rw [hh]: h (n+4) = (fun n => if n = 0 then ...) (n+4) — a redex. So the goal: log(↑n+4)/(↑n+4)² = (fun n => if n = 0 then 0 else log ↑n/↑n²) (n+4). My show: `show (if (n+4:ℕ) = 0 then 0 else ...) = Real.log (↑n+4)/...` — FLIPPED vs the goal. Fix: show `Real.log (↑n+4)/(↑n+4)² = if (n+4:ℕ) = 0 then (0:ℝ) else Real.log ↑(n+4)/↑(n+4)²` — hmm the cast forms: the lambda body has Real.log ↑m / ↑m² at m = n+4: Real.log ↑(n+4)/↑(n+4)². So: ```lean rw [hh] show Real.log ((n : ℝ) + 4) / ((n : ℝ) + 4) ^ 2 = if (n + 4 : ℕ) = 0 then (0 : ℝ) else Real.log (↑(n + 4)) / (↑(n + 4) : ℝ) ^ 2 rw [if_neg (by omega : (n + 4 : ℕ) ≠ 0)] push_cast ring_nf ``` Wait — after rw [if_neg]: RHS becomes Real.log ↑(n+4)/↑(n+4)²; goal: log (↑n+4)/(↑n+4)² = log ↑(n+4)/↑(n+4)²: push_cast normalizes ↑(n+4) → ↑n + 4 ✓ both sides match → ring_nf or rfl. But push_cast rewrites the GOAL's ↑(n+4) — both sides — ✓ then goal becomes syntactically equal → closed by... push_cast doesn't close; ring_nf closes by normalization? After push_cast both sides are identical — `rfl`? or ring_nf closes identical goals ✓ (ring_nf closes by rfl up to normalization). Hmm — is `show ... = if ...` defeq to the goal `log(↑n+4)/... = (fun n => ...) (n+4)`? The redex (fun n => if n = 0 then ...) (n+4) beta-reduces to if (n+4) = 0 then ... — defeq ✓ show accepts. 3. **hsplit** (line 383-384): `exact (sum_add_tsum_nat_add 4 hsumh).symm` — unknown identifier. Fix: `exact (hsumh.sum_add_tsum_nat_add 4).symm` — the LiDigammaLeft pattern ✓. And the shifted form: the lemma's shifted term is ∑' i, f (i + k) — with f := h (a variable) — h (n+4) ✓ syntactic ✓. 4. **hhead** (lines 385-396): the sum_range chain + simp only + the show-rws. Current form has issues (the `rw [show h 1 = ...]` after simp only might not find `h 1` since simp only [if_pos...] may have already evaluated h 0 and h 1's ifs). Let me rewrite hhead robustly: ```lean have hhead : ∑ n ∈ Finset.range 4, h n = Real.log 2 / 4 + Real.log 3 / 9 := by rw [Finset.sum_range_succ, Finset.sum_range_succ, Finset.sum_range_succ, Finset.sum_range_succ, Finset.sum_range_zero] have h0 : h 0 = (0 : ℝ) := by rw [hh]; simp have h1' : h 1 = (0 : ℝ) := by rw [hh]; simp have h2' : h 2 = Real.log 2 / 4 := by rw [hh] show (if (2 : ℕ) = 0 then (0 : ℝ) else Real.log (↑(2:ℕ)) / (↑(2:ℕ) : ℝ) ^ 2) = _ rw [if_neg (by norm_num)] push_cast ring_nf have h3' : h 3 = Real.log 3 / 9 := by rw [hh] show (if (3 : ℕ) = 0 then (0 : ℝ) else Real.log (↑(3:ℕ)) / (↑(3:ℕ) : ℝ) ^ 2) = _ rw [if_neg (by norm_num)] push_cast ring_nf rw [h0, h1', h2', h3'] ring ``` hmm — the show for h2': after rw [hh], h 2 = (fun n => if n = 0 then ...) 2 — the show's LHS `if (2:ℕ) = 0 then 0 else Real.log ↑(2:ℕ)/↑(2:ℕ)²` is defeq (beta) ✓. After if_neg: Real.log ↑(2:ℕ)/↑(2:ℕ)² = Real.log 2/4: push_cast: ↑(2:ℕ) → (2:ℝ) ✓ then (2:ℝ)^2 = 4: ring_nf normalizes the division: log 2 / 2^2 vs log 2/4: ring_nf handles (2^2 = 4) ✓ hopefully; if not, `norm_num` for the 2^2=4 then congr. The h1' : h 1 = 0: rw [hh]; simp: (fun n => ...) 1 → beta → if (1:ℕ) = 0 then... if_neg (1 ≠ 0) → log ↑1/↑1²: log 1 = 0 (Real.log_one simp) → 0/1 = 0: simp closes ✓ (need the cast ↑1 = 1: simp's Nat.cast_one ✓). OK. 5. The final assembly linarith at 435: with hmain + the log bounds ✓ should be fine. 6. The htail's h1 (lines 397-406): same flipped-show issue: goal after refine tsum_congr fun n => ?_: h (n+4) = log (↑n+4)/(↑n+4)² — my show has LHS `if (n+4) = 0 then...` — defeq to h (n+4) after rw [hh] ✓ (rw [hh] exposes the redex; show reduced-if = tail-value: defeq ✓). So htail's show: `(if (n+4:ℕ) = 0 then (0:ℝ) else Real.log ↑(n+4)/↑(n+4)²) = Real.log (↑n+4)/(↑n+4)²` — wait the error earlier was "show ... is not definitionally equal to target Real.log (↑n+4)/(↑n+4)^2 = (fun n => ...) (n+4)" — the TARGET has h(n+4) on the RIGHT (the tsum_congr direction h(n+4)-tsum = tail-tsum gives pointwise h (n+4) = tail-value). My show had (if-form) = tail-value — the mismatch: target is `Real.log (↑n+4)/(↑n+4)^2 = (fun n => ...) (n+4)`?? — that's tail-value = h(n+4)! The tsum_congr for h1 : (∑' h(n+4)) = (∑' tail): tsum_congr (h : ∀ i, f i = g i) : ∑' f = ∑' g — so pointwise h (n+4) = tail n — the goal should be h (n+4) = tail-value. The error's target shows `Real.log (↑n + 4)/... = (fun n => ...) (n + 4)` — hmm that has tail-value on the LEFT — meaning the tsum_congr direction was f = tail-fn, g = h-shifted — i.e., my h1's statement `(∑' n, h (n+4)) = ∑' n, tail n` — tsum_congr proves f-tsum = g-tsum from f i = g i: f := (fun n => h (n+4)), g := tail-fn: pointwise: h (n+4) = tail n — the error shows the goal as `Real.log (↑n+4)/... = (fun n => ...) (n+4)` which is tail = h(n+4) — FLIPPED from what I said. Because tsum_congr's h might be the reverse... Whatever — the error message's target: `Real.log (↑n + 4) / (↑n + 4) ^ 2 = (fun n => if ...) (n + 4)` — so I need my show to be THAT: after rw [hh]: show `Real.log (↑n+4)/(↑n+4)² = if (n+4:ℕ) = 0 then (0:ℝ) else Real.log ↑(n+4)/↑(n+4)²` — defeq ✓. Then rw [if_neg]; push_cast; ring_nf ✓. So for BOTH hsumh.h1 and htail.h1, the show should be: `Real.log (↑n+4)/(↑n+4)² = if-form` (tail on LEFT). Let me fix both shows to that direction. Actually — simpler and more robust: skip the show entirely; use `simp only [if_neg..., Nat.cast_add, Nat.cast_ofNat]`: ```lean refine tsum_congr fun n => ?_ rw [hh] rw [show ((fun n : ℕ => if n = 0 then (0 : ℝ) else Real.log (n : ℝ) / (n : ℝ) ^ 2) (n + 4)) = Real.log (↑(n + 4) : ℝ) / (↑(n + 4) : ℝ) ^ 2 from rfl] -- beta ... ``` Too fragile. Let me just fix the show directions. For hsumh.h1: the goal after `apply summable_log_div_sq_tail.congr; intro n`: tail-fn n = (fun n => h (n+4)) n — i.e. `Real.log (↑n+4)/(↑n+4)² = h (n+4)`: rw [hh]: RHS becomes the redex: show `Real.log (↑n+4)/(↑n+4)² = if (n+4:ℕ) = 0 then (0:ℝ) else Real.log ↑(n+4)/↑(n+4)²` — defeq ✓ (beta on RHS). rw [if_neg (by omega)]; push_cast; ring_nf ✓. Wait — after rw [hh], the RHS `(fun n => h (n+4)) n` — hmm: g = (fun n => h (n+4)); g n beta-reduces to h (n+4) automatically? The goal displayed as `... = h (n + 4)`? or with the redex? The apply-congr goal: f n = g n where g = (fun n => h (n+4)) — g n displays as h (n+4) after beta (Lean elaborates the application). rw [hh] rewrites the h INSIDE: h (n+4) → (fun m => if m = 0 then ...) (n+4) — a redex. My show: `tail-value = if-form` — the if-form is defeq to the redex ✓. OK let me make these three edits (hle_pointwise restructure, hsumh.h1 show, hsplit method-form, hhead rewrite, htail.h1 show).
Applying the fixes to the assembly block (hle_pointwise, hsumh, hsplit, hhead, htail).
tool: Edit
input
{
  "file_path": "D:\\Python\\Quantum\\research\\lean\\NguyenRH1\\NguyenRH1\\LiTightR.lean",
  "old_string": "  have hle_pointwise : \u2200 n : \u2115,\n      \u2016LSeries.term (fun n => (ArithmeticFunction.vonMangoldt n : \u2102)) (2 : \u2102) n\u2016\n        \u2264 h n := by\n    intro n\n    rw [dirichletTerm_norm_eq n, hh]\n    rcases eq_or_ne n 0 with rfl | hn\n    \u00b7 simp\n    \u00b7 rw [if_neg hn, if_neg hn]\n      exact div_le_div_of_nonneg_right ArithmeticFunction.vonMangoldt_le_log\n        (by positivity : (0 : \u211d) \u2264 (n : \u211d) ^ 2)\n  -- summability of h: the tail n + 4 is summable, and the head is finite\n  have hsumh : Summable h := by\n    have h1 : Summable (fun n : \u2115 => h (n + 4)) := by\n      apply summable_log_div_sq_tail.congr\n      intro n\n      rw [hh]\n      show (if (n + 4 : \u2115) = 0 then (0 : \u211d) else Real.log (n + 4) / ((n + 4 : \u2115) : \u211d) ^ 2)\n          = Real.log ((n : \u211d) + 4) / ((n : \u211d) + 4) ^ 2\n      rw [if_neg (by omega : (n + 4 : \u2115) \u2260 0)]\n      push_cast\n      ring_nf\n    exact (summable_nat_add_iff 4).mp h1\n  -- the head/tail split of the h-tsum\n  have hsplit : \u2211' n : \u2115, h n = (\u2211 n \u2208 Finset.range 4, h n) + \u2211' n : \u2115, h (n + 4) := by\n    exact (sum_add_tsum_nat_add 4 hsumh).symm\n  have hhead : \u2211 n \u2208 Finset.range 4, h n = Real.log 2 / 4 + Real.log 3 / 9 := by\n    rw [Finset.sum_range_succ, Finset.sum_range_succ, Finset.sum_range_succ,\n      Finset.sum_range_succ, Finset.sum_range_zero]\n    rw [hh]\n    simp only [Nat.zero_eq, if_pos, Nat.one_ne_zero, Nat.add_eq_zero_iff,\n      OfNat.ofNat_ne_zero, and_self, not_false_eq_true]\n    rw [show h 1 = (0 : \u211d) from by rw [hh]; simp]\n    rw [show h 2 = Real.log 2 / 4 from by\n      rw [hh]; rw [if_neg (by norm_num : (2 : \u2115) \u2260 0)]; push_cast; ring_nf]\n    rw [show h 3 = Real.log 3 / 9 from by\n      rw [hh]; rw [if_neg (by norm_num : (3 : \u2115) \u2260 0)]; push_cast; ring_nf]\n    ring\n  have htail : \u2211' n : \u2115, h (n + 4) \u2264 (Real.log 3 + 1) / 3 := by\n    have h1 : (\u2211' n : \u2115, h (n + 4))\n        = \u2211' n : \u2115, Real.log ((n : \u211d) + 4) / ((n : \u211d) + 4) ^ 2 := by\n      refine tsum_congr fun n => ?_\n      rw [hh]\n      show (if (n + 4 : \u2115) = 0 then (0 : \u211d) else Real.log (n + 4) / ((n + 4 : \u2115) : \u211d) ^ 2)\n          = Real.log ((n : \u211d) + 4) / ((n : \u211d) + 4) ^ 2\n      rw [if_neg (by omega : (n + 4 : \u2115) \u2260 0)]\n      push_cast\n      ring_nf\n    rw [h1]\n    exact tsum_log_div_sq_tail_le",
  "new_string": "  have hle_pointwise : \u2200 n : \u2115,\n      \u2016LSeries.term (fun n => (ArithmeticFunction.vonMangoldt n : \u2102)) (2 : \u2102) n\u2016\n        \u2264 h n := by\n    intro n\n    rcases eq_or_ne n 0 with rfl | hn\n    \u00b7 rw [dirichletTerm_norm_eq 0, hh]\n      simp\n    \u00b7 rw [dirichletTerm_norm_eq n, if_neg hn, hh]\n      show ArithmeticFunction.vonMangoldt n / (n : \u211d) ^ 2\n          \u2264 if n = 0 then (0 : \u211d) else Real.log (n : \u211d) / (n : \u211d) ^ 2\n      rw [if_neg hn]\n      exact div_le_div_of_nonneg_right ArithmeticFunction.vonMangoldt_le_log\n        (by positivity : (0 : \u211d) \u2264 (n : \u211d) ^ 2)\n  -- summability of h: the tail n + 4 is summable, and the head is finite\n  have hsumh : Summable h := by\n    have h1 : Summable (fun n : \u2115 => h (n + 4)) := by\n      apply summable_log_div_sq_tail.congr\n      intro n\n      rw [hh]\n      show Real.log ((n : \u211d) + 4) / ((n : \u211d) + 4) ^ 2\n          = if (n + 4 : \u2115) = 0 then (0 : \u211d)\n            else Real.log (\u2191(n + 4)) / (\u2191(n + 4) : \u211d) ^ 2\n      rw [if_neg (by omega : (n + 4 : \u2115) \u2260 0)]\n      push_cast\n      ring_nf\n    exact (summable_nat_add_iff 4).mp h1\n  -- the head/tail split of the h-tsum\n  have hsplit : \u2211' n : \u2115, h n = (\u2211 n \u2208 Finset.range 4, h n) + \u2211' n : \u2115, h (n + 4) := by\n    exact (hsumh.sum_add_tsum_nat_add 4).symm\n  have hhead : \u2211 n \u2208 Finset.range 4, h n = Real.log 2 / 4 + Real.log 3 / 9 := by\n    rw [Finset.sum_range_succ, Finset.sum_range_succ, Finset.sum_range_succ,\n      Finset.sum_range_succ, Finset.sum_range_zero]\n    have h0 : h 0 = (0 : \u211d) := by rw [hh]; simp\n    have h1' : h 1 = (0 : \u211d) := by rw [hh]; simp\n    have h2' : h 2 = Real.log 2 / 4 := by\n      rw [hh]\n      show (if (2 : \u2115) = 0 then (0 : \u211d) else Real.log (\u2191(2:\u2115)) / (\u2191(2:\u2115) : \u211d) ^ 2) = _\n      rw [if_neg (by norm_num)]\n      push_cast\n      ring_nf\n    have h3' : h 3 = Real.log 3 / 9 := by\n      rw [hh]\n      show (if (3 : \u2115) = 0 then (0 : \u211d) else Real.log (\u2191(3:\u2115)) / (\u2191(3:\u2115) : \u211d) ^ 2) = _\n      rw [if_neg (by norm_num)]\n      push_cast\n      ring_nf\n    rw [h0, h1', h2', h3']\n    ring\n  have htail : \u2211' n : \u2115, h (n + 4) \u2264 (Real.log 3 + 1) / 3 := by\n    have h1 : (\u2211' n : \u2115, h (n + 4))\n        = \u2211' n : \u2115, Real.log ((n : \u211d) + 4) / ((n : \u211d) + 4) ^ 2 := by\n      refine tsum_congr fun n => ?_\n      rw [hh]\n      show (if (n + 4 : \u2115) = 0 then (0 : \u211d) else Real.log (\u2191(n + 4)) / (\u2191(n + 4) : \u211d) ^ 2)\n          = Real.log ((n : \u211d) + 4) / ((n : \u211d) + 4) ^ 2\n      rw [if_neg (by omega : (n + 4 : \u2115) \u2260 0)]\n      push_cast\n      ring_nf\n    rw [h1]\n    exact tsum_log_div_sq_tail_le"
}
raw content_json (database row)
[{"type":"thinking","thinking":"I see the current state. Remaining fixes needed:\n\n1. **hle_pointwise** (lines 360-369): `rw [dirichletTerm_norm_eq n, hh]` then `rcases` — the issue: after rw [dirichletTerm_norm_eq n, hh], the goal for the n=0 case is `(if 0 = 0 then 0 else Λ 0/0²) ≤ h 0`... wait — the rcases produces n := 0 substitution — but the rw happened BEFORE rcases, so for rfl case: dirichletTerm_norm_eq 0... Let me restructure: rcases first, then handle:\n```lean\n  have hle_pointwise : ∀ n : ℕ,\n      ‖LSeries.term (fun n => (ArithmeticFunction.vonMangoldt n : ℂ)) (2 : ℂ) n‖\n        ≤ h n := by\n    intro n\n    rcases eq_or_ne n 0 with rfl | hn\n    · rw [dirichletTerm_norm_eq 0, hh]\n      simp\n    · rw [dirichletTerm_norm_eq n, if_neg hn, hh]\n      show ArithmeticFunction.vonMangoldt n / (n : ℝ) ^ 2\n          ≤ if n = 0 then (0 : ℝ) else Real.log (n : ℝ) / (n : ℝ) ^ 2\n      rw [if_neg hn]\n      exact div_le_div_of_nonneg_right ArithmeticFunction.vonMangoldt_le_log\n        (by positivity : (0 : ℝ) ≤ (n : ℝ) ^ 2)\n```\nThe n=0 case: goal ‖term 0‖ ≤ h 0: dirichletTerm_norm_eq 0 gives ‖term 0‖ = if 0 = 0 then 0 else ... = 0 — rw then the goal's LHS becomes (if (0:ℕ) = 0 then (0:ℝ) else ...) — hmm dirichletTerm_norm_eq 0's RHS: `if 0 = 0 then 0 else Λ 0/↑0²` — rw replaces ‖term 0‖ with that if. And h 0 after rw [hh]: (fun n => if n = 0 then ...) 0 = if 0 = 0 then 0 else ... Then `simp` should close: if_pos rfl both sides → 0 ≤ 0 ✓. So:\n```lean\n    · rw [dirichletTerm_norm_eq 0, hh]\n      simp\n```\nThe error at line 357 area was \"if n = 0 then...\" pattern not found because the rw order was wrong (rw before rcases with n unsubstituted... actually the error was in the inr case: after rw [dirichletTerm_norm_eq n, hh], goal: Λ n/↑n² ≤ (fun n => if n = 0 then ...) n — the redex — my `rw [if_neg hn, if_neg hn]` failed since the if is under the redex. The show fixes it. For the inl case (rfl): goal after rw [dirichletTerm_norm_eq 0, hh]: (if (0:ℕ)=0 then 0 else Λ 0/↑0^2) ≤ (fun n => ...) 0 — hmm the RHS redex: `simp` should evaluate both (if_pos + beta + the h-def if) — `simp` closes 0 ≤ 0 ✓. Hmm — will simp evaluate (fun n => if n = 0 then (0:ℝ) else ...) 0? simp beta-reduces and if_pos ✓. OK.\n\n2. **hsumh's h1** (lines 372-380): `apply summable_log_div_sq_tail.congr; intro n` — Summable.congr (hf : Summable f) (h : ∀ i, f i = g i) : Summable g — with f = the tail's fn, g = (fun n => h (n+4)): the pointwise goal: f n = g n: `Real.log (↑n+4)/(↑n+4)² = h (n+4)` — my current show has it flipped: `show (if ...) = Real.log (↑n+4)/...` — the goal is `Real.log (↑n+4)/(↑n+4)² = h (n+4)` — wait which order? apply summable_log_div_sq_tail.congr: summable_log_div_sq_tail : Summable g' where g' = fun n => log (↑n+4)/(↑n+4)²; congr : Summable f → (∀ i, f i = g i) → Summable g — apply ... .congr to goal Summable (fun n => h (n+4)): unifies g := (fun n => h (n+4)), f := g' (from the lemma's type). Then intro n: goal f n = g n: `Real.log (↑n+4)/(↑n+4)² = (fun n => h (n+4)) n` = h (n+4). After rw [hh]: h (n+4) = (fun n => if n = 0 then ...) (n+4) — a redex. So the goal: log(↑n+4)/(↑n+4)² = (fun n => if n = 0 then 0 else log ↑n/↑n²) (n+4). My show: `show (if (n+4:ℕ) = 0 then 0 else ...) = Real.log (↑n+4)/...` — FLIPPED vs the goal. Fix: show `Real.log (↑n+4)/(↑n+4)² = if (n+4:ℕ) = 0 then (0:ℝ) else Real.log ↑(n+4)/↑(n+4)²` — hmm the cast forms: the lambda body has Real.log ↑m / ↑m² at m = n+4: Real.log ↑(n+4)/↑(n+4)². So:\n```lean\n      rw [hh]\n      show Real.log ((n : ℝ) + 4) / ((n : ℝ) + 4) ^ 2\n          = if (n + 4 : ℕ) = 0 then (0 : ℝ) else Real.log (↑(n + 4)) / (↑(n + 4) : ℝ) ^ 2\n      rw [if_neg (by omega : (n + 4 : ℕ) ≠ 0)]\n      push_cast\n      ring_nf\n```\nWait — after rw [if_neg]: RHS becomes Real.log ↑(n+4)/↑(n+4)²; goal: log (↑n+4)/(↑n+4)² = log ↑(n+4)/↑(n+4)²: push_cast normalizes ↑(n+4) → ↑n + 4 ✓ both sides match → ring_nf or rfl. But push_cast rewrites the GOAL's ↑(n+4) — both sides — ✓ then goal becomes syntactically equal → closed by... push_cast doesn't close; ring_nf closes by normalization? After push_cast both sides are identical — `rfl`? or ring_nf closes identical goals ✓ (ring_nf closes by rfl up to normalization).\n\nHmm — is `show ... = if ...` defeq to the goal `log(↑n+4)/... = (fun n => ...) (n+4)`? The redex (fun n => if n = 0 then ...) (n+4) beta-reduces to if (n+4) = 0 then ... — defeq ✓ show accepts.\n\n3. **hsplit** (line 383-384): `exact (sum_add_tsum_nat_add 4 hsumh).symm` — unknown identifier. Fix: `exact (hsumh.sum_add_tsum_nat_add 4).symm` — the LiDigammaLeft pattern ✓. And the shifted form: the lemma's shifted term is ∑' i, f (i + k) — with f := h (a variable) — h (n+4) ✓ syntactic ✓.\n\n4. **hhead** (lines 385-396): the sum_range chain + simp only + the show-rws. Current form has issues (the `rw [show h 1 = ...]` after simp only might not find `h 1` since simp only [if_pos...] may have already evaluated h 0 and h 1's ifs). Let me rewrite hhead robustly:\n```lean\n  have hhead : ∑ n ∈ Finset.range 4, h n = Real.log 2 / 4 + Real.log 3 / 9 := by\n    rw [Finset.sum_range_succ, Finset.sum_range_succ, Finset.sum_range_succ,\n      Finset.sum_range_succ, Finset.sum_range_zero]\n    have h0 : h 0 = (0 : ℝ) := by rw [hh]; simp\n    have h1' : h 1 = (0 : ℝ) := by rw [hh]; simp\n    have h2' : h 2 = Real.log 2 / 4 := by\n      rw [hh]\n      show (if (2 : ℕ) = 0 then (0 : ℝ) else Real.log (↑(2:ℕ)) / (↑(2:ℕ) : ℝ) ^ 2) = _\n      rw [if_neg (by norm_num)]\n      push_cast\n      ring_nf\n    have h3' : h 3 = Real.log 3 / 9 := by\n      rw [hh]\n      show (if (3 : ℕ) = 0 then (0 : ℝ) else Real.log (↑(3:ℕ)) / (↑(3:ℕ) : ℝ) ^ 2) = _\n      rw [if_neg (by norm_num)]\n      push_cast\n      ring_nf\n    rw [h0, h1', h2', h3']\n    ring\n```\nhmm — the show for h2': after rw [hh], h 2 = (fun n => if n = 0 then ...) 2 — the show's LHS `if (2:ℕ) = 0 then 0 else Real.log ↑(2:ℕ)/↑(2:ℕ)²` is defeq (beta) ✓. After if_neg: Real.log ↑(2:ℕ)/↑(2:ℕ)² = Real.log 2/4: push_cast: ↑(2:ℕ) → (2:ℝ) ✓ then (2:ℝ)^2 = 4: ring_nf normalizes the division: log 2 / 2^2 vs log 2/4: ring_nf handles (2^2 = 4) ✓ hopefully; if not, `norm_num` for the 2^2=4 then congr. The h1' : h 1 = 0: rw [hh]; simp: (fun n => ...) 1 → beta → if (1:ℕ) = 0 then... if_neg (1 ≠ 0) → log ↑1/↑1²: log 1 = 0 (Real.log_one simp) → 0/1 = 0: simp closes ✓ (need the cast ↑1 = 1: simp's Nat.cast_one ✓). OK.\n\n5. The final assembly linarith at 435: with hmain + the log bounds ✓ should be fine.\n\n6. The htail's h1 (lines 397-406): same flipped-show issue: goal after refine tsum_congr fun n => ?_: h (n+4) = log (↑n+4)/(↑n+4)² — my show has LHS `if (n+4) = 0 then...` — defeq to h (n+4) after rw [hh] ✓ (rw [hh] exposes the redex; show reduced-if = tail-value: defeq ✓). So htail's show: `(if (n+4:ℕ) = 0 then (0:ℝ) else Real.log ↑(n+4)/↑(n+4)²) = Real.log (↑n+4)/(↑n+4)²` — wait the error earlier was \"show ... is not definitionally equal to target Real.log (↑n+4)/(↑n+4)^2 = (fun n => ...) (n+4)\" — the TARGET has h(n+4) on the RIGHT (the tsum_congr direction h(n+4)-tsum = tail-tsum gives pointwise h (n+4) = tail-value). My show had (if-form) = tail-value — the mismatch: target is `Real.log (↑n+4)/(↑n+4)^2 = (fun n => ...) (n+4)`?? — that's tail-value = h(n+4)! The tsum_congr for h1 : (∑' h(n+4)) = (∑' tail): tsum_congr (h : ∀ i, f i = g i) : ∑' f = ∑' g — so pointwise h (n+4) = tail n — the goal should be h (n+4) = tail-value. The error's target shows `Real.log (↑n + 4)/... = (fun n => ...) (n + 4)` — hmm that has tail-value on the LEFT — meaning the tsum_congr direction was f = tail-fn, g = h-shifted — i.e., my h1's statement `(∑' n, h (n+4)) = ∑' n, tail n` — tsum_congr proves f-tsum = g-tsum from f i = g i: f := (fun n => h (n+4)), g := tail-fn: pointwise: h (n+4) = tail n — the error shows the goal as `Real.log (↑n+4)/... = (fun n => ...) (n+4)` which is tail = h(n+4) — FLIPPED from what I said. Because tsum_congr's h might be the reverse... Whatever — the error message's target: `Real.log (↑n + 4) / (↑n + 4) ^ 2 = (fun n => if ...) (n + 4)` — so I need my show to be THAT: after rw [hh]: show `Real.log (↑n+4)/(↑n+4)² = if (n+4:ℕ) = 0 then (0:ℝ) else Real.log ↑(n+4)/↑(n+4)²` — defeq ✓. Then rw [if_neg]; push_cast; ring_nf ✓.\n\nSo for BOTH hsumh.h1 and htail.h1, the show should be: `Real.log (↑n+4)/(↑n+4)² = if-form` (tail on LEFT). Let me fix both shows to that direction.\n\nActually — simpler and more robust: skip the show entirely; use `simp only [if_neg..., Nat.cast_add, Nat.cast_ofNat]`:\n```lean\n      refine tsum_congr fun n => ?_\n      rw [hh]\n      rw [show ((fun n : ℕ => if n = 0 then (0 : ℝ) else Real.log (n : ℝ) / (n : ℝ) ^ 2) (n + 4))\n          = Real.log (↑(n + 4) : ℝ) / (↑(n + 4) : ℝ) ^ 2 from rfl]  -- beta\n      ...\n```\nToo fragile. Let me just fix the show directions. For hsumh.h1: the goal after `apply summable_log_div_sq_tail.congr; intro n`: tail-fn n = (fun n => h (n+4)) n — i.e. `Real.log (↑n+4)/(↑n+4)² = h (n+4)`: rw [hh]: RHS becomes the redex: show `Real.log (↑n+4)/(↑n+4)² = if (n+4:ℕ) = 0 then (0:ℝ) else Real.log ↑(n+4)/↑(n+4)²` — defeq ✓ (beta on RHS). rw [if_neg (by omega)]; push_cast; ring_nf ✓.\n\nWait — after rw [hh], the RHS `(fun n => h (n+4)) n` — hmm: g = (fun n => h (n+4)); g n beta-reduces to h (n+4) automatically? The goal displayed as `... = h (n + 4)`? or with the redex? The apply-congr goal: f n = g n where g = (fun n => h (n+4)) — g n displays as h (n+4) after beta (Lean elaborates the application). rw [hh] rewrites the h INSIDE: h (n+4) → (fun m => if m = 0 then ...) (n+4) — a redex. My show: `tail-value = if-form` — the if-form is defeq to the redex ✓.\n\nOK let me make these three edits (hle_pointwise restructure, hsumh.h1 show, hsplit method-form, hhead rewrite, htail.h1 show).","signature":""},{"type":"text","text":"Applying the fixes to the assembly block (hle_pointwise, hsumh, hsplit, hhead, htail)."},{"type":"tool_use","id":"Edit_197","name":"Edit","input":{"file_path":"D:\\Python\\Quantum\\research\\lean\\NguyenRH1\\NguyenRH1\\LiTightR.lean","old_string":"  have hle_pointwise : ∀ n : ℕ,\n      ‖LSeries.term (fun n => (ArithmeticFunction.vonMangoldt n : ℂ)) (2 : ℂ) n‖\n        ≤ h n := by\n    intro n\n    rw [dirichletTerm_norm_eq n, hh]\n    rcases eq_or_ne n 0 with rfl | hn\n    · simp\n    · rw [if_neg hn, if_neg hn]\n      exact div_le_div_of_nonneg_right ArithmeticFunction.vonMangoldt_le_log\n        (by positivity : (0 : ℝ) ≤ (n : ℝ) ^ 2)\n  -- summability of h: the tail n + 4 is summable, and the head is finite\n  have hsumh : Summable h := by\n    have h1 : Summable (fun n : ℕ => h (n + 4)) := by\n      apply summable_log_div_sq_tail.congr\n      intro n\n      rw [hh]\n      show (if (n + 4 : ℕ) = 0 then (0 : ℝ) else Real.log (n + 4) / ((n + 4 : ℕ) : ℝ) ^ 2)\n          = Real.log ((n : ℝ) + 4) / ((n : ℝ) + 4) ^ 2\n      rw [if_neg (by omega : (n + 4 : ℕ) ≠ 0)]\n      push_cast\n      ring_nf\n    exact (summable_nat_add_iff 4).mp h1\n  -- the head/tail split of the h-tsum\n  have hsplit : ∑' n : ℕ, h n = (∑ n ∈ Finset.range 4, h n) + ∑' n : ℕ, h (n + 4) := by\n    exact (sum_add_tsum_nat_add 4 hsumh).symm\n  have hhead : ∑ n ∈ Finset.range 4, h n = Real.log 2 / 4 + Real.log 3 / 9 := by\n    rw [Finset.sum_range_succ, Finset.sum_range_succ, Finset.sum_range_succ,\n      Finset.sum_range_succ, Finset.sum_range_zero]\n    rw [hh]\n    simp only [Nat.zero_eq, if_pos, Nat.one_ne_zero, Nat.add_eq_zero_iff,\n      OfNat.ofNat_ne_zero, and_self, not_false_eq_true]\n    rw [show h 1 = (0 : ℝ) from by rw [hh]; simp]\n    rw [show h 2 = Real.log 2 / 4 from by\n      rw [hh]; rw [if_neg (by norm_num : (2 : ℕ) ≠ 0)]; push_cast; ring_nf]\n    rw [show h 3 = Real.log 3 / 9 from by\n      rw [hh]; rw [if_neg (by norm_num : (3 : ℕ) ≠ 0)]; push_cast; ring_nf]\n    ring\n  have htail : ∑' n : ℕ, h (n + 4) ≤ (Real.log 3 + 1) / 3 := by\n    have h1 : (∑' n : ℕ, h (n + 4))\n        = ∑' n : ℕ, Real.log ((n : ℝ) + 4) / ((n : ℝ) + 4) ^ 2 := by\n      refine tsum_congr fun n => ?_\n      rw [hh]\n      show (if (n + 4 : ℕ) = 0 then (0 : ℝ) else Real.log (n + 4) / ((n + 4 : ℕ) : ℝ) ^ 2)\n          = Real.log ((n : ℝ) + 4) / ((n : ℝ) + 4) ^ 2\n      rw [if_neg (by omega : (n + 4 : ℕ) ≠ 0)]\n      push_cast\n      ring_nf\n    rw [h1]\n    exact tsum_log_div_sq_tail_le","new_string":"  have hle_pointwise : ∀ n : ℕ,\n      ‖LSeries.term (fun n => (ArithmeticFunction.vonMangoldt n : ℂ)) (2 : ℂ) n‖\n        ≤ h n := by\n    intro n\n    rcases eq_or_ne n 0 with rfl | hn\n    · rw [dirichletTerm_norm_eq 0, hh]\n      simp\n    · rw [dirichletTerm_norm_eq n, if_neg hn, hh]\n      show ArithmeticFunction.vonMangoldt n / (n : ℝ) ^ 2\n          ≤ if n = 0 then (0 : ℝ) else Real.log (n : ℝ) / (n : ℝ) ^ 2\n      rw [if_neg hn]\n      exact div_le_div_of_nonneg_right ArithmeticFunction.vonMangoldt_le_log\n        (by positivity : (0 : ℝ) ≤ (n : ℝ) ^ 2)\n  -- summability of h: the tail n + 4 is summable, and the head is finite\n  have hsumh : Summable h := by\n    have h1 : Summable (fun n : ℕ => h (n + 4)) := by\n      apply summable_log_div_sq_tail.congr\n      intro n\n      rw [hh]\n      show Real.log ((n : ℝ) + 4) / ((n : ℝ) + 4) ^ 2\n          = if (n + 4 : ℕ) = 0 then (0 : ℝ)\n            else Real.log (↑(n + 4)) / (↑(n + 4) : ℝ) ^ 2\n      rw [if_neg (by omega : (n + 4 : ℕ) ≠ 0)]\n      push_cast\n      ring_nf\n    exact (summable_nat_add_iff 4).mp h1\n  -- the head/tail split of the h-tsum\n  have hsplit : ∑' n : ℕ, h n = (∑ n ∈ Finset.range 4, h n) + ∑' n : ℕ, h (n + 4) := by\n    exact (hsumh.sum_add_tsum_nat_add 4).symm\n  have hhead : ∑ n ∈ Finset.range 4, h n = Real.log 2 / 4 + Real.log 3 / 9 := by\n    rw [Finset.sum_range_succ, Finset.sum_range_succ, Finset.sum_range_succ,\n      Finset.sum_range_succ, Finset.sum_range_zero]\n    have h0 : h 0 = (0 : ℝ) := by rw [hh]; simp\n    have h1' : h 1 = (0 : ℝ) := by rw [hh]; simp\n    have h2' : h 2 = Real.log 2 / 4 := by\n      rw [hh]\n      show (if (2 : ℕ) = 0 then (0 : ℝ) else Real.log (↑(2:ℕ)) / (↑(2:ℕ) : ℝ) ^ 2) = _\n      rw [if_neg (by norm_num)]\n      push_cast\n      ring_nf\n    have h3' : h 3 = Real.log 3 / 9 := by\n      rw [hh]\n      show (if (3 : ℕ) = 0 then (0 : ℝ) else Real.log (↑(3:ℕ)) / (↑(3:ℕ) : ℝ) ^ 2) = _\n      rw [if_neg (by norm_num)]\n      push_cast\n      ring_nf\n    rw [h0, h1', h2', h3']\n    ring\n  have htail : ∑' n : ℕ, h (n + 4) ≤ (Real.log 3 + 1) / 3 := by\n    have h1 : (∑' n : ℕ, h (n + 4))\n        = ∑' n : ℕ, Real.log ((n : ℝ) + 4) / ((n : ℝ) + 4) ^ 2 := by\n      refine tsum_congr fun n => ?_\n      rw [hh]\n      show (if (n + 4 : ℕ) = 0 then (0 : ℝ) else Real.log (↑(n + 4)) / (↑(n + 4) : ℝ) ^ 2)\n          = Real.log ((n : ℝ) + 4) / ((n : ℝ) + 4) ^ 2\n      rw [if_neg (by omega : (n + 4 : ℕ) ≠ 0)]\n      push_cast\n      ring_nf\n    rw [h1]\n    exact tsum_log_div_sq_tail_le"},"extra_content":null}]