*To*: isabelle-users at cl.cam.ac.uk*Subject*: [isabelle] Question regarding sequent calculi in Isabelle*From*: Johannes Faber <johannesfaber at gmx.de>*Date*: Tue, 9 Aug 2011 11:34:06 +0200

Hi all,

The rule is of the shape |- p[v0/v'] --> q[v0/v] -----------------------, |- [p]q

On 10 Jul 2011, Makarius wrote:

This looks a bit too "syntactic". The framework does not allow toaccessthe term structure as such, you somehow need to reason symbolicallywithinthe minimal logic of Pure.There might be ways, say in Isabelle/HOL with a more detailedsyntacticmodel of the calculus. But this also means you have to invest moreworkin the formalization. The Sequents theories are really old. I guess that quite a bit moreexpertise has emerged in the past decades how to do such things. Ifyouask on isbelle-users some experts might tell you more.

Many thanks for any help! Johannes -- Dipl.-Inform. Johannes Faber Correct System Design Group Department of Computing Science Carl von Ossietzky University of Oldenburg Phone: +49 441 798-4638 Fax: +49 441 798-2965

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**Follow-Ups**:**Re: [isabelle] Question regarding sequent calculi in Isabelle***From:*Lawrence Paulson

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