6 lines
247 B
Text
6 lines
247 B
Text
theorem ex1 (x y : Nat) (h : x + 2 = y + 2) : x = y := by
|
|
injection h with h
|
|
trace_state -- without smart unfolding the state would be a mess
|
|
injection h with h
|
|
trace_state -- without smart unfolding the state would be a mess
|
|
assumption
|