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[Coq-Club] question

From: "" <judy AT mail.ccnu.edu.cn>
To: coq-club AT pauillac.inria.fr
Subject: [Coq-Club] question
Date: Tue, 27 Nov 2007 14:20:03 +0800
List-archive: <http://pauillac.inria.fr/pipermail/coq-club/>

Dear Professor:

how to prove:

Lemma AA1:forall (s s1 o o1 x x1:nat),
(s,o,x)<>(s1,o1,x1)->(s<>s1)\/(o<>o1)\/(x<>x1).

Lemma AA2:forall (s s1 o o1 x x1:nat),
(s<>s1)\/(o<>o1)\/(x<>x1)->(s,o,x)<>(s1,o1,x1).

Judy.

[Coq-Club] question,
- Re: [Coq-Club] question, Edsko de Vries
  - Re: [Coq-Club] question, Jean-Francois Monin