Path: ...!feed.opticnetworks.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail From: olcott Newsgroups: comp.theory,sci.logic Subject: Re: D correctly simulated by H proved for THREE YEARS --- rewritten Date: Sat, 15 Jun 2024 10:23:11 -0500 Organization: A noiseless patient Spider Lines: 55 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Date: Sat, 15 Jun 2024 17:23:11 +0200 (CEST) Injection-Info: dont-email.me; posting-host="65be3053bb2d9b452c13d5ddc3153d90"; logging-data="3706462"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX198/MHWeKv+h5iYQU03ROVH" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:FonCZt5TFZMBhrU4lOH9Efr4xB0= Content-Language: en-US In-Reply-To: Bytes: 3469 On 6/15/2024 10:12 AM, Fred. Zwarts wrote: > Op 15.jun.2024 om 16:48 schreef olcott: >> On 6/15/2024 9:37 AM, Fred. Zwarts wrote: >>> >>> Is this the new definition of "pathological"? >> >> *It is the same thing that I have been saying all along* >> >> 00   typedef void (*ptr)(); // pointer to void function >> 01 >> 02   int HH(ptr P, ptr I); >> 03 >> 04   void DDD(int (*x)()) >> 05   { >> 06     HH(x, x); >> 07     return; >> 08   } >> 09 >> 10   int main() >> 11   { >> 12     HH(DDD,DDD); >> 13   } >> >> Line 12 main() >>    invokes HH(DDD,DDD); that simulates DDD() >> >> *REPEAT UNTIL outer HH aborts* >>    Line 06 simulated DDD() >>    invokes simulated HH(DDD,DDD); that simulates DDD() >> >> DDD correctly simulated by HH never reaches its own "return" >> instruction and halts. > > So, you agree that you are changing definitions. Not at all. The original definition still applies when it is made more generic. 01 int D(ptr p) 02 { 03 int Halt_Status = H(p, p); 04 if (Halt_Status) 05 HERE: goto HERE; 06 return Halt_Status; 07 } D correctly simulated by H has isomorphic behavior to DDD correctly simulated by HH, both get stuck in recursive simulation. -- Copyright 2024 Olcott "Talent hits a target no one else can hit; Genius hits a target no one else can see." Arthur Schopenhauer