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- Newsgroups: sci.logic
- Path: sparky!uunet!gumby!destroyer!cs.ubc.ca!uw-beaver!jon
- From: jon@cs.washington.edu (Jon Jacky)
- Subject: Re: Programs for simple logic proofs: where are they?
- Message-ID: <1992Nov16.183210.9769@beaver.cs.washington.edu>
- Summary: Otter and HOL are very nice, but probably not what the poster wanted
- Keywords: Natural deduction, automatic theorem proving, Otter, HOL, Muffin
- Sender: news@beaver.cs.washington.edu (USENET News System)
- Organization: Computer Science & Engineering, U. of Washington, Seattle
- References: <4804@equinox.unr.edu>
- Date: Mon, 16 Nov 92 18:32:10 GMT
- Lines: 30
-
- In article <4804@equinox.unr.edu> mjb@dws020.unr.edu (Mike Brown) writes:
- >I am looking for programs that will do proofs like:
- > Prove: Q \
- > 1 P then Q Premis > The problem
- > 2 P Premis /
- > 3 Q 1, 2, Modus Ponens > The program's proof
- >
- >(The proofs do get more involved)
- >
- >Is there a program out there that will do these proofs?
-
- I saw two responses to this post, recommending Otter and HOL. I think they
- made it clear that they were probably not what Mike Brown was looking for.
- The Otter and HOL versions of this very simple proof don't look a whole lot
- like Mike's very clear presentation. I've read the book about Otter and
- learned/used a little of HOL; they are both powerful research systems, with
- all that entails.
-
- I think what the original post was asking for was a simple natural deduction
- prover for propositional logic, where the problem statements and proofs look
- much as they do in a logic textbook. Do such things exist? The nearest thing
- I have read about is "Muffin: A Proof Assistant", a chapter by Richard C. Moore
- in Jones and Shaw, CASE STUDIES IN SYSTEMATIC SOFTWARE DEVELOPMENT, Prentice
- Hall International, 1990. I recall the chapter saying something about Muffin
- being made available. I wonder if anyone is using it.
-
- - Jon Jacky, jon@radonc.washington.edu, University of Washington, Seattle USA
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