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Fix a few minor Lean misformalisations #206

Merged
merged 12 commits into from
Aug 28, 2024
11 changes: 6 additions & 5 deletions lean4/src/putnam_2015_b6.lean
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Original file line number Diff line number Diff line change
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import Mathlib
open BigOperators

open Function
open Filter Topology

noncomputable abbrev putnam_2015_b6_solution : ℝ := sorry
-- Real.pi ^ 2 / 16
theorem putnam_2015_b6
(A : ℕ → ℕ)
(hA : ∀ k > 0, A k = {j : ℕ | Odd j ∧ j ∣ k ∧ j < Real.sqrt (2 * k)}.encard)
: ∑' k : Set.Ici 1, (-1 : ℝ) ^ ((k : ℝ) - 1) * (A k / (k : ℝ)) = putnam_2015_b6_solution :=
sorry
(A : ℕ → ℕ)
(hA : ∀ k > 0, A k = {j : ℕ | Odd j ∧ j ∣ k ∧ j < Real.sqrt (2 * k)}.encard) :
Tendsto (fun K : ℕ ↦ ∑ k in Finset.Icc 1 K, (-1 : ℝ) ^ ((k : ℝ) - 1) * (A k / (k : ℝ)))
atTop (𝓝 putnam_2015_b6_solution) :=
sorry
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