display all the ideas for this combination of texts
4 ideas
9457 | The two main views in philosophy of logic are extensionalism and intensionalism [Jacquette] |
9820 | In classical logic, logical truths are valid formulas; in higher-order logics they are purely logical [Dummett] |
9458 | Extensionalists say that quantifiers presuppose the existence of their objects [Jacquette] |
9461 | Intensionalists say meaning is determined by the possession of properties [Jacquette] |