*To*: Makarius <makarius at sketis.net>, Edward Pierzchalski <e.a.pierzchalski at gmail.com>, Simon Wimmer <wimmersimon at gmail.com>, "cl-isabelle-users at lists.cam.ac.uk" <cl-isabelle-users at lists.cam.ac.uk>*Subject*: Re: [isabelle] Using an assumption as a rule*From*: Peter Lammich <lammich at in.tum.de>*Date*: Thu, 06 Oct 2016 14:47:44 +0200*In-reply-to*: <520a9d61-1ad2-83ab-d79e-70a0a188bb49@sketis.net>*References*: <CADBMsp+9iPT620WVfyDhz-Hmzu2RJVwBu4ddV6WyA+8F4+vmww@mail.gmail.com> <CAASQnwNE0hTq4Hm8-9vX2cATbOMwTJGnYMUNtHRJXKUCOb6MPw@mail.gmail.com> <CADBMsp+HYoZcbbmTipP=d9k2if+OqSzmC46-7C1Gh_yo3Z+UsA@mail.gmail.com> <1475756206.6039.34.camel@in.tum.de> <520a9d61-1ad2-83ab-d79e-70a0a188bb49@sketis.net>

I just want to point out that the 'subgoal' command has no overhead: Sorry, I meant textual overhead (boilerplate), not computational overhead. -- Â Peter > on > the contrary, it allows to check proofs compositionally and thus in > parallel. The explicit proof structure is also an advantage for > maintainability. > > In some situations, 'subgoal' cannot be used, though. One example are > schematic goal states. Then one really needs to go back to old-style > tactical means. > > > Makarius > > >

**References**:**[isabelle] Using an assumption as a rule***From:*Edward Pierzchalski

**Re: [isabelle] Using an assumption as a rule***From:*Simon Wimmer

**Re: [isabelle] Using an assumption as a rule***From:*Edward Pierzchalski

**Re: [isabelle] Using an assumption as a rule***From:*Peter Lammich

**Re: [isabelle] Using an assumption as a rule***From:*Makarius

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