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From: wij <wyniijj5@gmail.com>
Newsgroups: comp.theory
Subject: Re: How to write a self-referencial TM?
Date: Thu, 15 May 2025 00:43:04 +0800
Organization: A noiseless patient Spider
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On Wed, 2025-05-14 at 09:51 -0500, olcott wrote:
> On 5/14/2025 12:13 AM, wij wrote:
> > Q: Write a turing machine that performs D function (which calls itself)=
:
> >=20
> > void D() {
> > =C2=A0 D();
> > }
> >=20
> > Easy?
> >=20
> >=20
>=20
> That is not a TM.

It is a C program that exists. Therefore, there must be a equivalent TM.

> To make a TM that references itself the closest
> thing is a UTM that simulates its own TM source-code.

How does a UTM simulate its own TM source-code?