Remove commented out bad code

Changes

1 changed files (+0/-23)

• BinOp.lean
  • @@ -2,20 +2,9 @@
    import Mathlib - -- example (f : ℝ → ℝ → ℝ) (l r : ℝ) (h : ∀ x, f l x = f x r ∧ f l x = x) : l = r := by - -- have h₁ : f l r = l := by - -- specialize h l - -- grind - -- have h₂ : f l r = r := by - -- specialize h r - -- grind - -- grind - example {α} (f : α → α → α) (l r : α) (hl : ∀ x, f l x = x) (hr : ∀ x, f x r = x) : l = r := by have h₁ : f l r = l := by grind - -- have h₂ : f l r = r := by - -- grind grind example {α} (f : α → α → α) (h : ∀ x y z, f x z = y ∧ ∀ z' ≠ z, f x z' ≠ y) : ∃ g : α → α → α, ∀ x y, f x (g x y) = g x (f x y) ∧ f x (g x y) = y := by
  • @@ -25,18 +14,6 @@ example {α} (f g : α → α → α) (i j : α) (hid : ∀ x, f i x = x ∧ f x
    have h₁ (x : α) : f x j = x := by specialize h x j j i grind - -- have h₁ (x : α) : f x j = x ∧ f j x = x ∧ g x i = x ∧ g i x = x := by - -- constructor - -- specialize h x j j i - -- grind - -- constructor - -- specialize h j i x j - -- grind - -- constructor - -- specialize h x i i j - -- grind - -- specialize h i x j i - -- grind have h₂ : i = j := by specialize hid j grind