Creating a Theorem with 4 Real Number Axioms and 2 Laws of Logic

  • Thread starter Thread starter evagelos
  • Start date Start date
  • Tags Tags
    Theorem
AI Thread Summary
The discussion centers on the possibility of creating a theorem using four axioms related to real numbers and two laws of logic. The axioms include properties of multiplication and addition, while the laws of logic involve Universal Elimination and substitution. Participants consider whether a theorem can be formulated based on these foundational elements. The inquiry is framed as a general exploration rather than a specific homework question. The conversation invites contributions on potential theorems that could emerge from the given axioms and logical laws.
evagelos
Messages
314
Reaction score
0
Given 4 axioms in real Nos:

1) 1x = x ,for all x

2) x+0 = x ,for all x

3) (x+y)z = xz+yz ,for all x,y,z

4) xy =yx ,for all x,y

The cancellation theorem : \forall[x+y = x+z\Longrightarrow y=z]

And two laws of logic:

1) The law of Universal Elimination

2) The law of substitution.

Can we create a theorem?.

If yes ,what that theorem may be??
 
Physics news on Phys.org
Is this homework help or general inquiry? If homework help, what progress have you made before we answer? If simply general inquiry, I'll be more than happy to jump right in!
 
BWElbert said:
Is this homework help or general inquiry? If homework help, what progress have you made before we answer? If simply general inquiry, I'll be more than happy to jump right in!

General inquiry.
 
I was reading documentation about the soundness and completeness of logic formal systems. Consider the following $$\vdash_S \phi$$ where ##S## is the proof-system making part the formal system and ##\phi## is a wff (well formed formula) of the formal language. Note the blank on left of the turnstile symbol ##\vdash_S##, as far as I can tell it actually represents the empty set. So what does it mean ? I guess it actually means ##\phi## is a theorem of the formal system, i.e. there is a...

Similar threads

Replies
7
Views
1K
Replies
2
Views
2K
Replies
1
Views
1K
Replies
10
Views
3K
Replies
2
Views
2K
Back
Top