|Platonism: Platonism in the narrower sense is the thesis in modern philosophy that some ideas and mental objects, especially ideas, are attributed reality. Various authors are Platonists with respect to e.g. numbers, mathematical entities, or universals. In contrast, e.g. intuitionism of mathematics assumes that numbers are not objects. This distinction has a significant effect on the logical formalisability of statements of mathematics. See also nominalism, mathematical entities, theoretical entities, completeness, evidence, fictions.|
Books on Amazon
Def Liberal Platonism / LP / terminology / Stalnaker: (early thesis): if the practice is legitimate (inferences, etc.) then we really make assertions and the semantics tells us really what the statements say - causal connection as a condition of reference is then superfluous. - Problem: the existence of numbers can not be constituted by a practice.
Liberal Platonism / Stalnaker: Solution: commitment to numbers is constituted by the endorsement of the practice. -
Liberal Platonism: in contrast to the MR is still verificationistic.
Ways a World may be Oxford New York 2003