Prove the following: a. AA b. (( AB)A)((BA)B) c. ( A B)(AB)
Question:
Prove the following:
a. ⊢ A→A
b. ⊢(( ¬A→¬B)→A)→((¬B→¬A)→¬B)
c. ⊢(¬ ¬ ¬A→¬ ¬ ¬B)→(¬A→¬B)
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a To prove AA we can use the following deduction 1 A Assumption 2 AA From 1 ...View the full answer
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