| α : Type u_1 | |
| as bs : List α | |
| ⊢ as ++ bs ++ bs = as ++ (bs ++ bs) | |
| rewrite.lean:18:20-18:29: error: tactic 'rewrite' failed, did not find instance of the pattern in the target expression | |
| ?as.reverse.reverse | |
| α : Type u_1 | |
| as bs : List α | |
| ⊢ as ++ [] ++ [] ++ bs ++ bs = as ++ (bs ++ bs) | |
| x y z : Nat | |
| h₁ : x = y | |
| h₂ : y = z | |
| ⊢ x = z | |
| rewrite.lean:37:9-37:20: error: tactic 'rewrite' failed, did not find instance of the pattern in the current goal | |
| x y z : Nat | |
| h₁ : 0 + x = y | |
| h₂ : 0 + y = z | |
| ⊢ x = z | |
| m n k : Nat | |
| h✝ : n = m | |
| h : k = m | |
| ⊢ k = n | |
| rewrite.lean:55:69-56:10: error: unsolved goals | |
| α : Type | |
| p : Prop | |
| a b c : α | |
| h : p → a = b | |
| ⊢ b = c | |
| α : Type | |
| p : Prop | |
| a b c : α | |
| h : p → a = b | |
| ⊢ p | |
| f : Nat → Nat | |
| w : ∀ (n : Nat), f n = 0 | |
| ⊢ [f 1, 0, f 1, f 2] = [0, 0, 0, 0] | |
| f : Nat → Nat | |
| w : ∀ (n : Nat), f n = 0 | |
| ⊢ [0, f 2, 0, f 2] = [0, 0, 0, 0] | |
| f : Nat → Nat | |
| w : ∀ (n : Nat), f n = 0 | |
| ⊢ [0, f 2, 0, f 2] = [0, 0, 0, 0] | |
| f : Nat → Nat | |
| w : ∀ (n : Nat), f n = 0 | |
| ⊢ [f 1, 0, f 1, 0] = [0, 0, 0, 0] | |
| f : Nat → Nat | |
| w : ∀ (n : Nat), f n = 0 | |
| ⊢ [f 1, f 2, 0, f 2] = [0, 0, 0, 0] | |
| f : Nat → Nat | |
| w : ∀ (n : Nat), f n = 0 | |
| ⊢ [f 1, 0, f 1, f 2] = [0, 0, 0, 0] |