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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Mikko <mikko.levanto@iki.fi>
Newsgroups: sci.logic
Subject: Re: This is how I overturn the Tarski Undefinability theorem
Date: Sun, 8 Sep 2024 17:31:23 +0300
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On 2024-09-08 12:44:56 +0000, olcott said:

> On 9/8/2024 3:45 AM, Mikko wrote:
>> On 2024-09-07 13:06:52 +0000, olcott said:
>> 
>>> On 9/7/2024 3:35 AM, Mikko wrote:
>>>> On 2024-09-06 12:22:04 +0000, olcott said:
>>>>> 
>>>>> The fundamental architectural overview of all Prolog implementations
>>>>> is the same True(x) means X is derived by applying Rules (AKA truth 
>>>>> preserving operations) to Facts.
>>>> 
>>>> The details are permitted to differ.
>>>> 
>>> 
>>> Instead of using any single order of logic we simultaneously
>>> represent an arbitrary number of orders of logic in a type
>>> hierarchy knowledge ontology.
>> 
>> The type system of Prolog is different.
>> 
> 
> Yes I know that. The architecture of Prolog is used
> the implementation details are scrapped.
> 
> ?- LP = not(true(LP)).
> LP = not(true(LP)).
> ?- unify_with_occurs_check(LP, not(true(LP))).
> false. // LP is rejected as cyclic
> 
> Even with Prolog just the way it is it is not as stupid
> as Tarski's system that doesn't know to reject the Liar
> Paradox.
> 
> https://liarparadox.org/Tarski_247_248.pdf

Most Prolog implementations don't reject L = not(ture(LP)).

-- 
Mikko