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This 3 page Class Notes was uploaded by Dallin Bednar on Wednesday October 21, 2015. The Class Notes belongs to PHI 251 at Syracuse University taught by Staff in Fall. Since its upload, it has received 26 views. For similar materials see /class/225656/phi-251-syracuse-university in PHIL-Philosophy at Syracuse University.
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Date Created: 10/21/15
PHI 251 A valid argument 1 The conclusion follows from the premises 2 The premises conclusively support the conclusion 3 In every possible situation in which the premises are all true the conclusion is also true 4 It is impossible for the premises to be true with the conclusion false 5 If the premises were true then the conclusion would be true A sgund argument The premises are true m the argument is valid Truthfunctional connectives V V 0 O T F T F TI TJ TJ TJ T1 Truth functionally compound sentence A compound sentence whose truth value depends upon the truth values of its constituent sentences and not on anything else Truth functional connective a connective symbol or word that is used to make truth functionally compound sentences Conjunction symbol 39 Showing validity Alicia is in my chemistry class 39 Bernard is in my chemistry class Therefore Alicia is in my chemistry class conclusion premise II A o B Some words in English that can be represented by the conjunction symbol TJ TJ39 Tlgt quotl1gt w and but nevertheless however still etc Negation Showing validity for a slightly more interesting argument Alicia and Bernard are not both in my class Alicia is in my class So Bernard is not in my class p1 conclusion II A 0 B I A 0 B B mmgt N Tradraw
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