DEFINITION lt_le_S()
TYPE =
∀n:nat.∀p:nat.(lt n p)→(le (S n) p)
BODY =
assume n: nat
assume p: nat
suppose H: lt n p
consider H
we proved lt n p
that is equivalent to le (S n) p
we proved ∀n:nat.∀p:nat.(lt n p)→(le (S n) p)