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sav08:deriving_propositional_resolution [2008/03/12 12:58] vkuncak |
sav08:deriving_propositional_resolution [2008/03/18 02:00] tatjana |
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| We next consider proof rules for checking [[Satisfiability of Sets of Formulas]]. | We next consider proof rules for checking [[Satisfiability of Sets of Formulas]]. | ||
| - | We extending the notion of [[Substitution Theorems for Propositional Logic|substitution on formulas]] to sets of formulas by | + | We are extending the notion of [[Substitution Theorems for Propositional Logic|substitution on formulas]] to sets of formulas by |
| \[ | \[ | ||
| subst(\sigma,S) = \{ subst(\sigma,F) \mid F \in S \} | subst(\sigma,S) = \{ subst(\sigma,F) \mid F \in S \} | ||