Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: Mikko Newsgroups: comp.theory Subject: Re: DDD specifies recursive emulation to HHH and halting to HHH1 --- STA Date: Thu, 3 Apr 2025 09:56:44 +0300 Organization: - Lines: 44 Message-ID: References: <8a3e7e93e6cad20b29d23405a0e6dbd497a492ac@i2pn2.org> <26f33bb039fda7d28ae164cfc4d0f582d4698f31@i2pn2.org> <36a4c76730b23cf78ddde73c723116b5380973a1@i2pn2.org> <4285ea3219a2d5f2d6c52e84697fa4e3d3dc80cb@i2pn2.org> <77c20f5832db4b47f5226dcb39bd2be7ba107a0c@i2pn2.org> <5cb726749c8a7457af5da692f77c6a04bc0c7401@i2pn2.org> <733db53c4b67cf1fbbd45fdf503b1d27539b7414@i2pn2.org> <524b81bf3658a42bcba56f807fce28bfea67d36f@i2pn2.org> <0b211b499961466f2b6a69af2f9a337c9f59bf9b@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Thu, 03 Apr 2025 08:56:45 +0200 (CEST) Injection-Info: dont-email.me; posting-host="6df5713ce06bce9517b6ce5a28cb5963"; logging-data="48904"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19xnA3GM8CFGZd5+NKDYTcq" User-Agent: Unison/2.2 Cancel-Lock: sha1:+ciouhKEu8Hq0H7HiRIKIOCeWss= Bytes: 3437 On 2025-04-03 02:15:55 +0000, olcott said: > On 4/2/2025 8:52 AM, joes wrote: >> Am Tue, 01 Apr 2025 21:37:40 -0500 schrieb olcott: >>> On 4/1/2025 8:13 PM, Richard Damon wrote: >>>> On 4/1/25 7:35 PM, olcott wrote: >>>>> On 4/1/2025 5:36 AM, Richard Damon wrote: >>>>>> On 3/31/25 10:19 PM, olcott wrote: >> >>>>>> But DDD doesn't prevent its own terminatation, as it calls an HHH >>>>>> that WILL abort its emulation and return and answer. >>>>>> >>>>> You know that DDD stopping running and DDD reaching its final halt >>>>> state are not the same thing you damned liar. >>>>> >>>> Right, the DDD who's simulation is stopped hasn't shown non-halting >>>> behavior, just not-yet-halted. >>>> >>> You already admitted that you are lying about this. >>> DDD emulated by HHH for an infinite number of steps never reaches its >>> final halt state. >> *finite >> >>> HHH sees this in one recursive emulation of DDD. >>> >>> *Simulating termination analyzer Principle* >>> It is always correct for any simulating termination analyzer to stop >>> simulating and reject any input that would otherwise prevent its own >>> termination. The only rebuttal to this is rejecting the notion that >>> deciders must always halt. >> It must also return the right value. >> > > By process of elimination and by the above criteria > we can determine that not stopping the emulation > causes HHH to never halt. This only leaves stopping > the emulation that semantically entails that the > input must be rejected. No, it does not entail that. -- Mikko