Rewrite the following sentence as a formal proposition.

  • Context: MHB 
  • Thread starter Thread starter Henry R
  • Start date Start date
Click For Summary
SUMMARY

The discussion focuses on rewriting a complex conditional statement involving the consumption of fruits as a formal proposition in propositional logic. The variables defined are G for "I eat apples," B for "I eat durians," and P for "I eat rambutans." The formal proposition is expressed as $$(G\to \neg B) \land (B\to \neg P) \land (P\to \neg G) \land (G\lor B\lor P).$$ This formulation accurately captures the relationships and conditions stated in the original sentence.

PREREQUISITES
  • Understanding of propositional logic
  • Familiarity with logical operators (e.g., implication, negation, disjunction)
  • Basic knowledge of formal propositions
  • Experience with symbolic representation of logical statements
NEXT STEPS
  • Study the principles of propositional logic
  • Learn about logical operators and their applications
  • Explore examples of formal propositions in mathematical logic
  • Practice rewriting complex statements into formal logic
USEFUL FOR

Students of logic, mathematicians, and anyone interested in formalizing statements in propositional logic will benefit from this discussion.

Henry R
Messages
25
Reaction score
0
I have a question here. I hope I'm not doing anything wrong here. So, we go!

"If I eat apples, then I will not eat durian, and if I eat durians, then I will not eat rambutans, and if I eat rambutans, then I will not eat apples, but I will surely eat either apples, durians or rambutans."

Let G =" I eat apples" , B ="I eat durians" , P = "I eat rambutans".

I have to rewrite the sentences as a formal proposition. Can you guys give your opinion on how to solve this?
 
Physics news on Phys.org
Henry R said:
I have a question here. I hope I'm not doing anything wrong here. So, we go!

"If I eat apples, then I will not eat durian, and if I eat durians, then I will not eat rambutans, and if I eat rambutans, then I will not eat apples, but I will surely eat either apples, durians or rambutans."

Let G =" I eat apples" , B ="I eat durians" , P = "I eat rambutans".

I have to rewrite the sentences as a formal proposition. Can you guys give your opinion on how to solve this?

I would go with the following:
$$(G\to \neg B) \land (B\to \neg P) \land (P\to \neg G) \land (G\lor B\lor P).$$
 
Ackbach said:
I would go with the following:
$$(G\to \neg B) \land (B\to \neg P) \land (P\to \neg G) \land (G\lor B\lor P).$$

Good!
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 10 ·
Replies
10
Views
3K
  • · Replies 17 ·
Replies
17
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 2 ·
Replies
2
Views
1K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 29 ·
Replies
29
Views
4K
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
4K
Replies
22
Views
4K