GATE (Graduate Aptitude Test in Engineering) Philosophy (XH-C4) Classical and Modern Western Philosophy-Logic Study Material (Page 22 of 23)

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Standard Truth-Functional Sentential Logic

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Standard Truth-Functional Sentential Logic

There is a certain school of thought that believes that the meanings of the truth-functional connectives (logical constants) are to be given in terms of the inferential moves that can be made by using them and not in te…

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Rules of Quantifiers

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Gottlob Frege discovered a technique of quantification to prove the validity of deductive arguments. Modern symbolic logic is distinct from traditional logic, for it makes a radical distinction between the logical behaviour of proper names and general terms. The distinction is:

  • A proper name is a complete expression while, a general term is an incomplete expression which may be written (in this example) as ‘x is mortal’ .
  • A proper name has only denotation, but a general term has bot…

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