Re: [Hol-info] Tactics to delete the assumptions in HOL-Light

2014-02-14 Thread Vincent Aravantinos
POP_ASSUM is working the same. I'd say the choice between FIRST_X_ASSUM or POP_ASSUM highly depends on the context: POP_ASSUM is simpler but does not always work of course. V. On 14.02.2014 14:29, Ramana Kumar wrote: You are right, Bill. Thank you. FIRST_X_ASSUM rather than FIRST_ASSUM, defi

Re: [Hol-info] Learning HOL Light

2014-02-14 Thread Vincent Aravantinos
On 14.02.2014 04:39, Bill Richter wrote: > I guess I understood that REWRITE_TAC used a complicated algorithm in order > to avoid infinite looping. So I think I didn't express my question very > well. I tend to think that it's not good coding on my part to rely on > features that I don't even

Re: [Hol-info] Tactics to delete the assumptions in HOL-Light

2014-02-14 Thread Ramana Kumar
You are right, Bill. Thank you. FIRST_X_ASSUM rather than FIRST_ASSUM, definitely. In HOL4 POP_ASSUM deletes the assumption, but I'm not sure if it's the same in HOL Light - perhaps not. On Fri, Feb 14, 2014 at 1:12 PM, Bill Richter wrote: > Ramana, I think it's better to say that the one time

Re: [Hol-info] Tactics to delete the assumptions in HOL-Light

2014-02-14 Thread Bill Richter
Ramana, I think it's better to say that the one time you use the assumption you should use it with FIRST_X_ASSUM or REMOVE_THEN. You can grep through the hol-light sources to get many examples, e.g. (poisson)hol_light> grep REMOVE_THEN Multivariate/* Let's get on-line help with # help "FIRST

Re: [Hol-info] Tactics to delete the assumptions in HOL-Light

2014-02-14 Thread Ramana Kumar
You could use some tactical that pulls out an assumption (POP_ASSUM, FIND_ASSUM, FIRST_ASSUM, USE_THEN, REMOVE_THEN, etc.) and give it a trivial thm_tactic like (K ALL_TAC) to essentially ignore (and hence discard) the assumption and do nothing else. On Thu, Feb 13, 2014 at 4:03 AM, Adnan Rashid

[Hol-info] [fm-announcements] Summer School on Cyber-Physical Systems, GRENOBLE (FRANCE) JULY 7-11, 2014

2014-02-14 Thread Klaus Havelund
[~~ Please disseminate widely within your teams & contacts ~~] Dear Colleagues, PERSYVAL-Lab and NASA-JPL are organizing the second edition of the CPS Summer School. The broad objective of the CPS Summer School is to explore the manifold relationship between networked embedded systems

[Hol-info] Tactics to delete the assumptions in HOL-Light

2014-02-14 Thread Adnan Rashid Raja
Dear all, I am working in HOL-Light. Can I find any tactics which can be used to delete the assumptions which are generated during the proof. These assumptions are used once, and of no need in future.   -- Regards Adnan---

Re: [Hol-info] New tactic: IMP_REWRITE_TAC

2014-02-14 Thread Vincent Aravantinos
On 14.02.2014 01:42, Michael Norrish wrote: > On 13/02/14 04:46, Vincent Aravantinos wrote: > >> Then considering leaving the goal unchanged, well it is a matter of taste... >> I >> know it is the standard to leave the goal unchanged. But I personally met >> many >> buggy situations that I hardly