Liste des Groupes | Revenir à c theory |
On 3/1/2025 4:39 PM, Fred. Zwarts wrote:No, DD doesn't contain a "pathological self-reference" as programs can not "referece" what ever is emulation them.Op 01.mrt.2025 om 22:11 schreef olcott:The finite string input DD to HHH emulated by HHH accordingOn 3/1/2025 2:16 PM, Fred. Zwarts wrote:>Op 01.mrt.2025 om 17:33 schreef olcott:>On 3/1/2025 9:39 AM, Fred. Zwarts wrote:>Op 01.mrt.2025 om 15:41 schreef olcott:>On 3/1/2025 6:49 AM, Richard Damon wrote:proves failure of HHH to reach the end of a proven terminating program.On 2/28/25 7:47 PM, olcott wrote:>_DD()>
[00002133] 55 push ebp ; housekeeping
[00002134] 8bec mov ebp,esp ; housekeeping
[00002136] 51 push ecx ; make space for local
[00002137] 6833210000 push 00002133 ; push DD
[0000213c] e882f4ffff call 000015c3 ; call HHH(DD)
[00002141] 83c404 add esp,+04
[00002144] 8945fc mov [ebp-04],eax
[00002147] 837dfc00 cmp dword [ebp-04],+00
[0000214b] 7402 jz 0000214f
[0000214d] ebfe jmp 0000214d
[0000214f] 8b45fc mov eax,[ebp-04]
[00002152] 8be5 mov esp,ebp
[00002154] 5d pop ebp
[00002155] c3 ret
Size in bytes:(0035) [00002155]
>
When we hypothesize that the code at machine address
0000213c is an x86 emulator then we know that DD
remains stuck in recursive emulation and cannot possibly
reach its own "ret" instruction and terminate normally.
>
When we add the additional complexity that HHH also
aborts this sequence at some point then every level
of recursive emulation immediately stops. This does
not enable any DD to ever reach its "ret" instruction.
>
But then you just negated your first assumption, as a partial emulator that aborts its emulation, then DD no longer gets stuck.
>
Cannot possibly reach its own "ret" instruction and terminate normally
DD emulated by HHH according to the above x86 machine code of DD
cannot possibly reach its own "ret" instruction and terminate normally
>
In other words,
The DD input to HHH unequivocally specifies a
non terminating computation.
>
>
What is the meaning of 'non terminating computation'?
to the behavior that it species (which includes pathological
self-reference) cannot possibly reach its "ret" instruction
and terminate normally.
When we say that the finite string input to HHH haltsNo, the input that doesn't halt isn't this input, as DD calls the one specific HHH that aborts and gives the claimed right answer.
because some other instance that is not an input halts
that is the same as saying that the Liar Paradox
is true because IT IS TRUE WHEN IT IS APPLIED TO ITSELF.
This sentence is not true: "This sentence is not true" IS TRUE.
Les messages affichés proviennent d'usenet.