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On 4/3/2025 2:08 AM, Mikko wrote:You can't stipulate that something is a fact.On 2025-04-03 01:30:28 +0000, olcott said:It is a stipulated basic fact.
>On 4/2/2025 5:05 PM, Richard Damon wrote:>On 4/2/25 11:59 AM, olcott wrote:>On 4/2/2025 4:20 AM, Mikko wrote:>On 2025-04-01 17:51:29 +0000, olcott said:>
>>>
All we have to do is make a C program that does this
with pairs of finite strings then it becomes self-evidently
correct needing no proof.
There already are programs that check proofs. But you can make your own
if you think the logic used by the existing ones is not correct.
>
If the your logic system is sufficiently weak there may also be a way to
make a C program that can construct the proof or determine that there is
none.
>
When we define a system that cannot possibly be inconsistent
then a proof of consistency not needed.
But you can't do that unless you limit the system to only have a finite number of statements expressible in it, and thus it can't handle most real problems
>>>
A system entirely comprised of Basic Facts and Semantic logical entailment cannot possibly be inconsistent.
>
Sure it can.
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The problem is you need to be very careful about what you allow as your "Basic Facts", and if you allow the system to create the concept of the Natural Numbers, you can't verify that you don't actually have a contradition in it.
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It never has been that natural numbers have
ever actually had any inconsistency themselves
That is generally believed but not actually proven.
>they are essentially nothing more than an ordered>
set of finite strings of digits.
The "nothing more" part cannot be proven.
There is no way that elements of the set of natural
is anything more or less then an ordered set of
concepts that can be expressed in some way such as a
string of digits.
When we ADD the notion of arithmetic this notionBut that can't be the definition of Natural Numbers, as it is recursive.
is added on top of the notion of an ordered set
of concepts.
In first order logic one cannotWe are still adding notions on top of the notion
of an ordered set of concepts.
even say that those strings must be finite.It would seem to be a stipulated aspect of the
definition of natural number: ∀n ∈ ℕ (n ≠ ∞)
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