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On 2024-06-09 18:40:16 +0000, olcott said:*Three laws of logic apply to all propositions*
On 6/9/2024 1:29 PM, Richard Damon wrote:A formal system can be inconsistent without being incorrect.On 6/9/24 2:13 PM, olcott wrote:>On 6/9/2024 1:08 PM, Richard Damon wrote:>On 6/9/24 1:18 PM, olcott wrote:>On 6/9/2024 10:36 AM, olcott wrote:>*This has direct application to undecidable decision problems*>
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When we ask the question: What is a truthmaker? The generic answer is
whatever makes an expression of language true <is> its truthmaker. This
entails that if there is nothing in the universe that makes expression X
true then X lacks a truthmaker and is untrue.
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X may be untrue because X is false. In that case ~X has a truthmaker.
Now we have the means to unequivocally define truth-bearer. X is a
truth-bearer iff (if and only if) X or ~X has a truthmaker.
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I have been working in this same area as a non-academician for a few
years. I have only focused on expressions of language that are {true on
the basis of their meaning}.
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Now that truthmaker and truthbearer are fully anchored it is easy to see
that self-contradictory expressions are simply not truthbearers.
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“This sentence is not true” can't be true because that would make it
untrue and it can't be false because that would make it true.
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Within the the definition of truthmaker specified above: “this sentence
has no truthmaker” is simply not a truthbearer. It can't be true within
the above specified definition of truthmaker because this would make it
false. It can't be false because that makes
it true.
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Unless the system is inconsistent, in which case they can be.
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Note,
When I specify the ultimate foundation of all truth then this
does apply to truth in logic, truth in math and truth in science.
Nope. Not for Formal system, which have a specific definition of its truth-makers, unless you let your definition become trivial for Formal logic where a "truth-makers" is what has been defined to be the "truth-makers" for the system.
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Formal systems are free to define their own truthmakers.
When these definitions result in inconsistency they are
proved to be incorrect.
If you call something "incorrect" without a proof then it--
is only an insignificant opinion.
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