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[Coq-Club] is "(A<->B)->((F A)<->(F B))" provable ?


chronological Thread 
  • From: gang chen <gangchen_sh AT yahoo.com>
  • To: coq-club AT pauillac.inria.fr
  • Subject: [Coq-Club] is "(A<->B)->((F A)<->(F B))" provable ?
  • Date: Wed, 13 Feb 2008 15:17:39 -0800 (PST)
  • List-archive: <http://pauillac.inria.fr/pipermail/coq-club/>

More precisely, is the assertion

Goal equiv : forall (F : Prop->Prop) (A B : Prop), 
   (A<->B)->((F A)<->(F B)).

provable ?
-- 
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