3 ideas
15927 | Definition just needs negation, known variables, conjunction, disjunction, substitution and quantification [Weyl, by Lavine] |
19087 | The meaning or purport of a symbol is all the rational conduct it would lead to [Peirce] |
4784 | Salmon says processes rather than events should be basic in a theory of physical causation [Salmon, by Psillos] |