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Infering Additional Knowledge

This rule is a "placeholder" for a number of ways to infer

  1. This has been shown in a previous proof or is shown as a subproof.
  2. This holds because F is a propositional consequence of K, i.e., the conclusion holds independently of the truth values of the atomic formulas and quantified formulas contained in K and F.
  3. This is an instance of some quantifier consequence wich give true conclusions in every domain.
  4. This is derived by applying substitution rules from known equalities and equivalences.

Author: Wolfgang Schreiner
Last Modification: November 30, 1999

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