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- From: Pierre Casteran <casteran AT labri.u-bordeaux.fr>
- To: coq-club AT pauillac.inria.fr
- Subject: [Coq-Club] Intros and delta reduction
- Date: Tue, 15 Jan 2002 08:26:13 +0100
- Organization: LaBRI
Hello,
In some cases, Intro forces a delta-reduction when the goal is not a
product.
But this is not always the case with the variant of Intros where you
specify both
the number and names of variables :
Goal (P,Q:Prop)~P -> (Q->P) ->~Q.
Intros P Q H H0 q. (* Fails cause (not Q) is not a product *)
Intros P Q H H0; Intro q. (* Succeeds *)
Then Intros id1 ... idN can no more described as equivalent to Intro i1;
Intro i2; ... ; Intro iN.
Pierre
P.S.
I didn't swirtch on 7.2 yet : (i'm still working with 7.1)
--
Pierre Casteran,
LaBRI, Universite Bordeaux-I |
351 Cours de la Liberation |
F-33405 TALENCE Cedex |
France |
tel : (+ 33) 5 56 84 69 31
fax : (+ 33) 5 56 84 66 69
email: Pierre . Casteran @ labri . u-bordeaux . fr (but whithout white
space)
www: http://dept-info.labri.u-bordeaux.fr/~casteran
- [Coq-Club] Intros and delta reduction, Pierre Casteran
- Re: [Coq-Club] Intros and delta reduction, Hugo Herbelin
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