Sense, Quantity, and Extension
Truth Be Told can be used for courses in philosophy of language, semantics, and the foundations of logic.
Chapter 2. Sense and Quantity
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SENSE AND QUANTITY
Frege’s Semantic Theory
In “Function and Concept” (1891a) and “On Sinn and Bedeutung” (1892a), Frege presented the elements of a theory of how sentences get to be true or false, what is now commonly called a theory of extension or semantic value. The ultimate extensions are the truth-values: truth and falsity. The extensions or semantic values of subsentential expressions are their contributions, as sentence constituents, to the determination of sentence truth-values at circumstances of evaluation.
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