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4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
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16 include "nat/plus.ma".
21 (*ndefinition y ≝ cic:/matita/tests/ng_commands/x.def(1).*)
25 unification hint 0 (∀n. P (0 + n) = P n) .
27 ntheorem foo: ∀n. ∀H:(P (? + n) → Prop). ∀p:P n. H p → True.
28 #n; #H; #p; #_; napply I;