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[Coq-Club] Mutually recursive functions with a decreasing measure


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  • From: Washington Ribeiro <wtonribeiro AT gmail.com>
  • To: coq-club AT inria.fr
  • Subject: [Coq-Club] Mutually recursive functions with a decreasing measure
  • Date: Thu, 17 Sep 2015 09:47:36 -0300
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Dear,

It's possible to define in Coq a mutually recursive function with a decreasing measure and with a automatically generated rewriting equation?

I've used three different kind of definitions as follow:

 

 

Muttually recursive

Decreasing measure

Rewriting equation

Fixpoint

Yes

No

Yes

Function

No

Yes

Yes

Program Fixpoint

Yes

Yes

No



So my problem is that I never have a definition with a automatically generated rewriting equation that allows to explicit a decreasing parameter and that is muttually recursive.

Best,
Washington



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