Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.theory > #50244

Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ]

From Ben <ben.usenet@bsb.me.uk>
Newsgroups comp.theory
Subject Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ]
Date 2022-05-11 20:54 +0100
Organization A noiseless patient Spider
Message-ID <87h75v7slr.fsf@bsb.me.uk> (permalink)
References <xpmdnb7bu_9vxOf_nZ2dnUU7_8zNnZ2d@giganews.com> <87mtfpl73u.fsf@bsb.me.uk> <doSdnZX9dO2SXub_nZ2dnUU7_8zNnZ2d@giganews.com>

Show all headers | View raw


olcott <NoOne@NoWhere.com> writes:

> On 5/10/2022 10:50 AM, Ben wrote:
>> olcott <NoOne@NoWhere.com> writes:
>> 
>>> (a) Verify that the execution trace of P by H is correct by comparing
>>> this execution trace to the ax86 source-code of P.
>>
>> P called with what argument?  I assume P.
>> 
>>> (b) Verify that this execution trace shows that P is stuck in
>>> infinitely nested simulation (a non-halting behavior).
>>
>> Something is wrong in your code if P(P), or a simulation of P(P), does
>> not halt, since you told us that it does.  Post the code and someone
>> will help you find the bug. 
>
> If you had the technical skill you could verify that it is 100%
> impossible for there to be anything wrong with the code on the basis
> of that of the verifiably correct execution trace that it derives.

You trace clearly and accurately shows that what you call the
"simulation of the input" is wrong.

H(P,P) == false is wrong because P(P) halts.  H is supposed to be able
to tell us which calls terminate and which ones won't.  Your H is wrong
by definition.

-- 
Ben.
"le génie humain a des limites, quand la bêtise humaine n’en a pas"
Alexandre Dumas (fils)

Back to comp.theory | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] olcott <NoOne@NoWhere.com> - 2022-05-10 07:26 -0500
  Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] wij <wyniijj2@gmail.com> - 2022-05-10 07:55 -0700
  Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] Ben <ben.usenet@bsb.me.uk> - 2022-05-10 16:50 +0100
    Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] olcott <NoOne@NoWhere.com> - 2022-05-10 23:47 -0500
      Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] Richard Damon <Richard@Damon-Family.org> - 2022-05-11 07:16 -0400
      Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] Ben <ben.usenet@bsb.me.uk> - 2022-05-11 14:21 +0100
        Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] olcott <NoOne@NoWhere.com> - 2022-05-11 09:24 -0500
          Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] Ben <ben.usenet@bsb.me.uk> - 2022-05-11 20:51 +0100
          Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] Richard Damon <Richard@Damon-Family.org> - 2022-05-11 19:42 -0400
    Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] olcott <NoOne@NoWhere.com> - 2022-05-11 09:07 -0500
      Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] Ben <ben.usenet@bsb.me.uk> - 2022-05-11 20:54 +0100
        Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] olcott <NoOne@NoWhere.com> - 2022-05-11 16:35 -0500
          Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] Ben <ben.usenet@bsb.me.uk> - 2022-05-12 01:25 +0100
            Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] olcott <NoOne@NoWhere.com> - 2022-05-11 19:38 -0500
              Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] Richard Damon <Richard@Damon-Family.org> - 2022-05-11 20:59 -0400
              Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] Ben <ben.usenet@bsb.me.uk> - 2022-05-12 02:24 +0100
                Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ]( will keep repeating until understood ) olcott <NoOne@NoWhere.com> - 2022-05-11 21:46 -0500
                Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ]( will keep repeating until understood ) Richard Damon <Richard@Damon-Family.org> - 2022-05-11 23:10 -0400
                Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ]( will keep repeating until understood ) Ben <ben.usenet@bsb.me.uk> - 2022-05-12 21:32 +0100
  Re: Proof that H(P,P)==0 is correct [ refuting the halting problem proofs ] wij <wyniijj2@gmail.com> - 2022-05-13 12:38 -0700

csiph-web