| 690.lean:3:2-3:29: error: too many variable names provided at alternative 'step', #3 provided, but #2 expected | |
| 690.lean:6:0-6:7: warning: declaration uses 'sorry' | |
| case step | |
| a b m✝ : Nat | |
| hStep : a.le m✝ | |
| ih : a.le (m✝ + 1) | |
| ⊢ a.le (m✝.succ + 1) | |
| 690.lean:11:0-11:7: warning: declaration uses 'sorry' | |
| case step | |
| a b x : Nat | |
| hStep : a.le x | |
| ih : a.le (x + 1) | |
| ⊢ a.le (x.succ + 1) |