Re: [Hol-info] Improve EXISTS_TAC with by taking hints from the assumption list

2012-12-27 Thread Konrad Slind
FYI. Somewhat related functionality is in Q.REFINE_EXISTS_TAC, which can be used to partially instantiate an existential. But you have to supply a witness, instead of saying "find a witness in the assumptions". Konrad. On Thu, Dec 27, 2012 at 5:55 AM, Ramana Kumar wrote: > Dear Vincent, > > I

Re: [Hol-info] Improve EXISTS_TAC with by taking hints from the assumption list

2012-12-27 Thread Ramana Kumar
Dear Vincent, I think you are right about SATISFY_ss - it can only prove a goal, not refine it. There might be something in quantHeuristicsLib that can help, but I'm not sure. Do you have a clone of the HOL4 git repository? You could make a pull request on github after adding HINT_EXISTS_TAC in a

Re: [Hol-info] Improve EXISTS_TAC with by taking hints from the assumption list

2012-12-27 Thread Vincent Aravantinos
Hi Michael, I'm regularly amazed by the pearls that HOL4 contains... I did not know about the SatisfySimps module! Now, from my first tests, this can only be used to conclude a goal. Concretely, if I have a goal of the following form: ?x. P x /\ Q x 0. P t ... where Q