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: DDD specifies recursive emulation to HHH and halting to HHH1 Date: Sat, 29 Mar 2025 09:35:10 -0000 (UTC) Organization: i2pn2 (i2pn.org) Message-ID: References: <448c82acff6b5fc1d2aa266be92df6f778ec2c6a@i2pn2.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Injection-Date: Sat, 29 Mar 2025 09:35:10 -0000 (UTC) Injection-Info: i2pn2.org; logging-data="2228780"; 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 Fri, 28 Mar 2025 14:21:24 -0500 schrieb olcott: > On 3/28/2025 4:43 AM, Fred. Zwarts wrote: >> Op 28.mrt.2025 om 03:13 schreef olcott: >>> On 3/27/2025 9:04 PM, Richard Damon wrote: >>>> On 3/27/25 9:07 PM, olcott wrote: >>>>> On 3/27/2025 7:38 PM, dbush wrote: >>>>>> On 3/27/2025 8:34 PM, olcott wrote: >>>>>>> On 3/27/2025 7:12 PM, dbush wrote: >>> No TM can take another directly executed TM as an input and Turing >>> computable functions only compute the mapping from inputs to outputs. >>> >> If A TM can only compute the mapping from *its* input to *its* output, >> it cannot be wrong. > > Taking a wild guess does not count as computing the mapping. A > termination analyzer must be able to prove what the behavior of its > input is. It can't simply take a wild guess. No, *you* must prove its correctness. The analyser can just report, or it is wrong. Also simulation is not guessing. We know the answer is the halting status of the direct execution. -- 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.