Prove each of the following assertions: a. is valid if and only if True | =
Question:
Prove each of the following assertions:
a. α is valid if and only if True | = α.
b. For any a, False | = α.
c. α | = β if and only if the sentence (α → β) is valid.
d. α ≡ β if and only if the sentence (α ↔ β) is valid.
e. α | = β if and only if the sentence (α ^ β) is un-satisfiable
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Remember iff in very model in which is true is also true Therefore a A valid sentence ...View the full answer
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Related Book For
Artificial Intelligence A Modern Approach
ISBN: 978-0137903955
2nd Edition
Authors: Stuart J. Russell and Peter Norvig
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