# propositional function

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## Synonyms for propositional function

*noun*

**formal expression containing variables**

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## Example Sentences for propositional function

(β) A propositional function is necessary when all its values are true.

Call it a propositional function; and, if φx be a propositional function, the undetermined variable x is the argument.

Now consider a propositional function Fχ in which the variable argument χ is itself a propositional function.

A 'propositional function' or 'norm' may be 'non-predicative.'

A propositional function (that is to say a definition) does not always determine a class.

For the text is rather a vague symbolical expression of a propositional function which is asserted to be true at all instants.