GATE (Graduate Aptitude Test in Engineering) Philosophy (XH-C4) Classical and Modern Western Philosophy-Symbolic Logic Study Material (Page 12 of 25)

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Rules of Replacement, Commutation

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Rules of Replacement

  • Rules of replacement are logically equivalent expressions.
  • In other words, rule of replacement means the rule which allows is to infer from any statement the results of replacing any component of the same statement by any other statement that is logically equivalent to the replaced component of the first statement.

For example;

The following stamens can be inferred

… (187 more equations) …

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Rules of Replacement, Association

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  • Rules of replacement are logically equivalent expressions.
  • In other words, rule of replacement means the rule which allows is to infer from any statement the results of replacing any component of the same statement by any other statement that is logically equivalent to the replaced component of the firs…

… (275 more equations) …

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