∀ n m, m ≤ (m + n)

Theorem le_plus_n_r : forall (n:nat), forall (m:nat), le m (plus m n).

theorem le_plus_n_r : \forall (n:nat). \forall (m:nat). (le) m ((plus) m n).

theorem le_plus_n_r : forall (n:nat.nat) , forall (m:nat.nat) , (((nat.le_) ) (m)) ((((nat.plus) ) (m)) (n)).

le_plus_n_r : LEMMA (FORALL(n:nat_sttfa.sttfa_nat):(FORALL(m:nat_sttfa.sttfa_nat):nat_sttfa.le(m)(nat_sttfa.plus(m)(n))))

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