*To*: Andrei Popescu <uuomul at yahoo.com>*Subject*: Re: [isabelle] question concerning simplification basics*From*: Makarius <makarius at sketis.net>*Date*: Fri, 10 Jul 2009 14:46:21 +0200 (CEST)*Cc*: cl-isabelle-users at lists.cam.ac.uk*In-reply-to*: <802683.11722.qm@web56102.mail.re3.yahoo.com>*References*: <802683.11722.qm@web56102.mail.re3.yahoo.com>*User-agent*: Alpine 1.10 (LNX 962 2008-03-14)

On Tue, 7 Jul 2009, Andrei Popescu wrote:

consts P::"'a => bool" definition Q :: "'a => bool" where "Q = P" lemma try: "P x ==> Q x" proof- assume "P x" thus "Q x" by (simp add: Q_def) qed

lemma try2: "P x ==> Q x" proof- assume "P x" thus "Q x" using Q_def by force (* THIS FAILS *) qed

Makarius

**References**:**[isabelle] question concerning simplification basics***From:*Andrei Popescu

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