1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 (* ATTENZIONE: si puo' eseguire solo con MatitaC e dopo aver scelto
16 Debug → always show all disambiguation errors (that, moreover, slows
17 down the library a lot) *)
19 include "nat/plus.ma".
21 ndefinition thesis0: ∀A:Type.Type ≝ λA. A → A.
23 ndefinition thesis: ∀A:Type.Type ≝ λA. ?.
27 ntheorem foo: ∀A:Type.thesis A.#A;#x;napply x;
30 ntheorem goo: ∀A:Type.A → A. #A; napply (foo ?);
35 ndefinition Q: Prop ≝ NP.
37 nlet rec nzero (n:nat) : nat ≝
42 ntheorem nzero_ok: nzero (S (S O)) = O.
47 ninductive nnat: Type ≝