valuation function
（ plural ）
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(logic) A function which assigns a truth value to every well-formed formula, which is identical to the model's interpretation function when applied to atomic propositions, and which otherwise assigns a truth value recursively depending on the formula's top logical connective and the truth values of the subformulae surrounding that logical connective.
valuation function
In propositional semantics, a valuation function assigns a truth value to every well-formed formula, coincides with the model's interpretation on atomic propositions, and determines the truth of complex formulas recursively based on their top logical connective and the truth values of their subformulae.
In propositional semantics, a valuation function assigns a truth value to every well-formed formula, coincides with the model's interpretation on atomic propositions, and determines the truth of complex formulas recursively based on their top logical connective and the truth values of their subformulae.
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