Case c1 t1 vs c2 t2 where c1 and c2 are not splitted and t1 and t2

[helm.git] / helm / software / matita / tests / interactive / test5.ma

whelp instance 
  \lambda A:Set. 
  \lambda f: A \to A \to A.
  \forall x,y : A.
      f x y = f y x.