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|    comp.ai.philosophy    |    Perhaps we should ask SkyNet about this    |    59,235 messages    |
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|    Message 58,008 of 59,235    |
|    olcott to Mikko    |
|    Re: Defeating the Tarski Undefinability     |
|    06 Oct 25 08:23:10    |
      XPost: sci.logic, sci.math       From: polcott333@gmail.com              On 10/6/2025 7:36 AM, Mikko wrote:       > On 2025-10-05 14:09:37 +0000, olcott said:       >       >> On 10/5/2025 5:26 AM, Mikko wrote:       >>> On 2025-10-04 13:30:22 +0000, olcott said:       >>>       >>>> On 10/4/2025 5:11 AM, Mikko wrote:       >>>>> On 2025-10-02 10:15:13 +0000, olcott said:       >>>>>       >>>>>> On 10/2/2025 5:03 AM, Mikko wrote:       >>>>>>> On 2025-10-01 16:33:46 +0000, olcott said:       >>>>>>>       >>>>>>>> On 10/1/2025 5:13 AM, Mikko wrote:       >>>>>>>>> On 2025-10-01 01:48:56 +0000, olcott said:       >>>>>>>>>> On 9/30/2025 7:54 AM, Mikko wrote:       >>>>>>>>>>> On 2025-09-29 12:24:30 +0000, olcott said:       >>>>>>>>>>>       >>>>>>>>>>>> On 9/27/2025 5:07 AM, Mikko wrote:       >>>>>>>>>>>>       >>>>>>>>>>>> Any sentence that is neither true nor false       >>>>>>>>>>>> must be rejected from any system of logic.       >>>>>>>>>>>> Non-truth bearers in logic systems are like       >>>>>>>>>>>> turds in birthday cakes.       >>>>>>>>>>>       >>>>>>>>>>> Every sentence of logic that is not tautology or       >>>>>>>>>>> dontradiction is       >>>>>>>>>>> true in some contexts and false in others.       >>>>>>>>>>       >>>>>>>>>> A mere false assumption       >>>>>>>>>       >>>>>>>>> No, it is true on the basis of the meanings of the words.       >>>>>>>>       >>>>>>>> The syntax of formal logical languages allows       >>>>>>>> some expressions to be created having pathological       >>>>>>>> self-reference(Olcott 2004).       >>>>>>>       >>>>>>> No syntax is enough for self-reference.       >>>>>>       >>>>>> Syntax is enough for self-reference.       >>>>>       >>>>> No, self-reference is a semantic feature. A string without meaning       >>>>> does not refer.       >>>>>       >>>>       >>>> Self-reference can be detected in a string with a name.       >>>>>> Tarski's Liar Paradox from page 248       >>>>>> It would then be possible to reconstruct the antinomy of the liar       >>>>>> in the metalanguage, by forming in the language itself a sentence       >>>>>> x such that the sentence of the metalanguage which is correlated       >>>>>> with x asserts that x is not a true sentence.       >>>>>> https://liarparadox.org/Tarski_247_248.pdf       >>>>>>       >>>>>> Formalized as:       >>>>>> x ∉ True if and only if p       >>>>>> where the symbol 'p' represents the whole sentence x       >>>>>> https://liarparadox.org/Tarski_275_276.pdf       >>>>>>       >>>>>>> The semantics determines whether       >>>>>>> any syntactic construct is a self-reference. For example. the       >>>>>>> arithmetic       >>>>>>> semantics of a formal language of arithmetics do not permit a self-       >>>>>>> reference.       >>>>>>       >>>>>> Gödel uses tricks for that.       >>>>>       >>>>> Tarski used the same tricks.       >>>>       >>>> Yet they only actually boil down to       >>>> Incomplete(F) ↔ ∃G ((F ⊬ G) ∧ (F ⊬ ¬G)).       >>>> and this       >>>> LP := ~True(LP)       >>>       >>> The system they considered has no symbol for :=. Instead, they construct       >>> something like LP <-> ~True(LP). Gödel then shows that that the       >>> expression       >>> that asserts its own unprovability is is not provable and therefore       >>> true.       >>       >> Claude AI eventually agreed that both Gödel's 1931       >> Incompleteness theorem and the Tarski Undefinability       >> theorem are anchored in liar paradox like expression       >> that should have been rejected as not a truth bearer.       >       > Gödel proved that every sentence of a first order theory that is not       > the negation of any sentnece of that theory is true in some model of       > that theory. Therefore every sentence of every first order theory is       > a truth-bearer.       >       > As long as you don't understand that "The liar's paradox is not true"       > is true and therefore a valid basis for a proof you cannot say anything       > about Tarski's proof but are stuck to straw men.       >              *The Liar Paradox is rejected*       (thus unavailable for subsequent analysis)       True(English, "This sentence is not true")==INCORRECT              *I explained this in complete detail to Claude AI*       https://claude.ai/share/45d3ca9c-fa9a-4a02-9e22-c6acd0057275              The most important aspect of Gödel's 1931 Incompleteness theorem       are these plain English direct quotes of Gödel from his paper:       ...there is also a close relationship with the “liar” antinomy,14 ...       ...14 Every epistemological antinomy can likewise be used for a similar       undecidability proof...       ...We are therefore confronted with a proposition which asserts its own       unprovability. 15 ...       (Gödel 1931:40-41)              Gödel, Kurt 1931.       On Formally Undecidable Propositions of Principia Mathematica And       Related Systems              https://monoskop.org/images/9/93/Kurt_G%C3%B6del_On_Formally_Und       cidable_Propositions_of_Principia_Mathematica_and_Related_Systems_1992.pdf                     Basically Claude AI completely validated all of my work       on Tarski Undefinability and Gödel 1931 Incompleteness.       https://claude.ai/share/45d3ca9c-fa9a-4a02-9e22-c6acd0057275              --       Copyright 2025 Olcott "Talent hits a target no one else can hit; Genius       hits a target no one else can see." Arthur Schopenhauer              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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