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From: immibis <news@immibis.com>
Newsgroups: sci.logic,comp.theory
Subject: Re: True on the basis of meaning --- Good job Richard ! ---Socratic
 method
Date: Thu, 16 May 2024 05:38:43 +0200
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On 16/05/24 02:36, olcott wrote:
> On 5/13/2024 9:31 PM, Richard Damon wrote:
>> On 5/13/24 10:03 PM, olcott wrote:
>>>
>>> Can a sequence of true preserving operations applied to expressions
>>> that are stipulated to be true derive p?
> 
> *You keep forgetting that you said this*
>> No, so True(L, p) is false
>> and thus ~True(L, p) is true.
>>
>>>
>>> Can a sequence of true preserving operations applied to expressions
>>> that are stipulated to be true derive ~p?
>>
> 
> *You keep forgetting that you said this*
>> No, so False(L, p) is false,
> 
> So True(L, x) always returns True or False for all
> inputs and False(L, x) defined as True(L,~x)
> always returns True or False for all inputs.
> 
> TruthBearer(L, x) ≡ (True(L,x) ∨ False(L,x))
> 
> *To make this easier to understand*
>   True(English, "a fish") is false
> False(English, "a fish") is false
> TruthBearer(English, "a fish") is false
> 
> Thus "a fish" is rejected as a type mismatch error
> for any system of bivalent logic, yet the predicates
> still answer correctly.
> 
> 
> 
> 

What is True(Logic,"¬True(English,'a fish')")?

What is X=True(Logic,"¬True(Logic, X)")?