12. Choose the claim that is false, over arbitrary logical sentences a and ß. (a) The sentence a is valid if and only if True = a. (b) a = B if and only if the sentence (a^ß) is unsatisfiable. (c) For...

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12. Choose the claim that is false, over arbitrary logical sentences a and ß.<br>(a) The sentence a is valid if and only if True = a.<br>(b) a = B if and only if the sentence (a^ß) is unsatisfiable.<br>(c) For any sentence a, False = a.<br>(d) Sentences a and ß are logically equivalent (that is, a = B) if and only if the sentence aß is valid.<br>

Extracted text: 12. Choose the claim that is false, over arbitrary logical sentences a and ß. (a) The sentence a is valid if and only if True = a. (b) a = B if and only if the sentence (a^ß) is unsatisfiable. (c) For any sentence a, False = a. (d) Sentences a and ß are logically equivalent (that is, a = B) if and only if the sentence aß is valid.

Jun 07, 2022

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12. Choose the claim that is false, over arbitrary logical sentences a and ß. (a) The sentence a is valid if and only if True = a. (b) a = B if and only if the sentence (a^ß) is unsatisfiable. (c) For...

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