Return-Path: Delivery-Date: Received: from ted.cs.uidaho.edu (no rfc931) by swan.cl.cam.ac.uk with SMTP (PP-6.5) outside ac.uk; Tue, 20 Apr 1993 11:29:21 +0100 Received: by ted.cs.uidaho.edu (16.6/1.34) id AA16383; Tue, 20 Apr 93 03:19:34 -0700 Sender: info-hol-request@ted.cs.uidaho.edu Errors-To: info-hol-request@ted.cs.uidaho.edu Precedence: bulk Received: from swan.cl.cam.ac.uk by ted.cs.uidaho.edu (16.6/1.34) id AA16378; Tue, 20 Apr 93 03:19:27 -0700 Received: from guillemot.cl.cam.ac.uk (user tfm (rfc931)) by swan.cl.cam.ac.uk with SMTP (PP-6.5) to cl; Tue, 20 Apr 1993 11:18:52 +0100 To: mel@ultrastar.EE.CORNELL.EDU (Miriam Leeser) Cc: info-hol@ted.cs.uidaho.edu, Tom.Melham@cl.cam.ac.uk Subject: Re: proof explanation mode In-Reply-To: Your message of Mon, 19 Apr 93 11:41:19 -0400. <9304191541.AA14464@ultrastar.EE.CORNELL.EDU> Date: Tue, 20 Apr 93 11:18:45 +0100 From: Tom Melham Message-Id: <"swan.cl.cam.:299630:930420101900"@cl.cam.ac.uk> > We are looking into a "proof explanation" mode in Nuprl, that is > different from the proof a user sees by applying tactics. Are there > other proof systems that have feedback to the user distinct from the > level of interaction with the prover? Yes, Avra Cohn (avrac@cl.cam.ac.uk) worked on this for HOL. Tom