Solved

From ($X)(y)Fxy We Can Validly Infer ($X)Fxa, Assuming That "A

Question 72

True/False

From ($x)(y)Fxy we can validly infer ($x)Fxa, assuming that "a" is not found earlier in the proof.

Related Questions

Q67: Fa • Ga is an instance of

Q68: Symbols list<br>You may use the list below

Q69: Symbols list<br>You may use the list below

Q70: All of the following are well-formed formulas

Q71: Existential Instantiation and Universal Instantiation are both

Q73: The identity rule says that each thing

Q74: Which of the following cannot be validly

Q75: Symbols list<br>You may use the list below

Q76: In applying EI, we instantiate to an

Q77: The implicational rule of inference that permits