5 lines
177 B
Text
5 lines
177 B
Text
import logic
|
|
open tactic
|
|
|
|
theorem T (a b c d : Prop) (Ha : a) (Hb : b) (Hc : c) (Hd : d) : a ∧ b ∧ c ∧ d
|
|
:= by fixpoint (λ f, [apply @and_intro; f | assumption; f | id])
|