Path: news.eternal-september.org!eternal-september.org!feeder3.eternal-september.org!i2pn.org!i2pn2.org!.POSTED!not-for-mail From: joes Newsgroups: comp.theory Subject: Re: DD correctly emulated by HHH --- Totally ignoring invalid rebuttals ---PSR--- Date: Sun, 9 Mar 2025 10:02:10 -0000 (UTC) Organization: i2pn2 (i2pn.org) Message-ID: <17e0bda2b4b1cf02b669523025359c9101ef1a6d@i2pn2.org> References: <4453bc0c1141c540852ea2223a7fedefc93f564c@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Sun, 9 Mar 2025 10:02:10 -0000 (UTC) Injection-Info: i2pn2.org; logging-data="3558681"; mail-complaints-to="usenet@i2pn2.org"; posting-account="nS1KMHaUuWOnF/ukOJzx6Ssd8y16q9UPs1GZ+I3D0CM"; User-Agent: Pan/0.145 (Duplicitous mercenary valetism; d7e168a git.gnome.org/pan2) X-Spam-Checker-Version: SpamAssassin 4.0.0 Am Sat, 08 Mar 2025 20:30:32 -0600 schrieb olcott: > On 3/8/2025 7:43 PM, dbush wrote: >> On 3/8/2025 8:24 PM, olcott wrote: >>> On 3/8/2025 6:56 PM, dbush wrote: >>>> On 3/8/2025 7:29 PM, olcott wrote: >>>>> On 3/8/2025 5:31 PM, dbush wrote: >>>>>> On 3/8/2025 6:23 PM, olcott wrote: >>>>>>> On 3/8/2025 4:58 PM, dbush wrote: >>>>>>>> On 3/8/2025 5:42 PM, olcott wrote: >>>>>>>>> On 3/8/2025 9:00 AM, dbush wrote: >>>>>>>>>> On 3/8/2025 9:03 AM, olcott wrote: >>>>>>>>>>> >>>>>>>>>>> Apparently you don't understand that inputs to a simulating >>>>>>>>>>> termination analyzer specifying infinite recursion or >>>>>>>>>>> recursive emulation cannot possibly reach their own final >>>>>>>>>>> state and terminate normally. >>>>>>>>>> >>>>>>>>>> Apparently you don't understand that inputs to a termination >>>>>>>>>> analyzer, simulating or otherwise, are specified by the >>>>>>>>>> specification that is the halting function: >>>>>>>>>> (,Y) maps to 1 if and only if X(Y) halts when executed >>>>>>>>>> directly (,Y) maps to 0 if and only if X(Y) does not halt >>>>>>>>>> when executed >>>>>>>>>> And HHH(DD)==0 fails to meet the above specification >>>>>>>>> >>>>>>>>> *THIS IS A SEMANTIC TAUTOLOGY THUS IMPOSSIBLY FALSE* Replacing >>>>>>>>> the code of HHH with an unconditional simulator and subsequently >>>>>>>>> running HHH(DD) cannot possibly reach its own "ret" instruction >>>>>>>>> and terminate normally because DD calls HHH(DD) in recursive >>>>>>>>> emulation. >>>>>>>>> It is ridiculously stupid to believe that HHH must report on >>>>>>>>> behavior other than the above behavior. >>>>>>>>> >>>>>>>> It must if it is to be classified as a halt decider or >>>>>>>> termination analyzer as per the definition. >>>>>>> >>>>>>> In other words you believe that HHH >>>>>> >>>>>> Is required to map the halting function to meet the requirements to >>>>>> be a halt decider / termination analyzer. >>>>>> >>>>> HHH must map from the input finite string DD to the behavior that >>>>> this finite string specifies >>>> >>>> And what it specifies, to be considered a solution to the halting >>>> problem, is given by the specification: >>>> Given any algorithm (i.e. a fixed immutable sequence of instructions) >>>> X described as with input Y: >>>> A solution to the halting problem is an algorithm H that computes the >>>> following mapping: >>>> (,Y) maps to 1 if and only if X(Y) halts when executed directly >>>> (,Y) maps to 0 if and only if X(Y) does not halt when executed >>>> >>> In the same way that Sum(5,3) == 9 That is misconception is very >>> widely held does not make it not a misconception. >>> >> In other words, you have no rebuttal to the fact that HHH doesn't meet >> the requirements to be a solution to the halting problem. > > If the halting problem actually requires that the "decider" > report on behavior other than what the input specifies then its notion > of a halting decider is not even a decider in computer science. Such as your HHH simulating not itself, but *what it would do if it were unconditional* -- Am Sat, 20 Jul 2024 12:35:31 +0000 schrieb WM in sci.math: It is not guaranteed that n+1 exists for every n.