Combining Texts

Ideas for 'talk', 'Logicism Revisited' and 'Ontology'

expand these ideas     |    start again     |     choose another area for these texts

display all the ideas for this combination of texts

---

8 ideas

5. Theory of Logic / A. Overview of Logic / 1. Overview of Logic

7681	Logic describes inferences between sentences expressing possible properties of objects [Jacquette]

5. Theory of Logic / C. Ontology of Logic / 2. Platonism in Logic

7682	Logic is not just about signs, because it relates to states of affairs, objects, properties and truth-values [Jacquette]

5. Theory of Logic / C. Ontology of Logic / 3. If-Thenism

10061

The If-thenist view only seems to work for the axiomatised portions of mathematics [Musgrave]

10065

Perhaps If-thenism survives in mathematics if we stick to first-order logic [Musgrave]

5. Theory of Logic / F. Referring in Logic / 2. Descriptions / c. Theory of definite descriptions

7697	On Russell's analysis, the sentence "The winged horse has wings" comes out as false [Jacquette]

5. Theory of Logic / I. Semantics of Logic / 3. Logical Truth

10050

A statement is logically true if it comes out true in all interpretations in all (non-empty) domains [Musgrave]

10049

Logical truths may contain non-logical notions, as in 'all men are men' [Musgrave]

5. Theory of Logic / L. Paradox / 5. Paradoxes in Set Theory / d. Russell's paradox

7701	Can a Barber shave all and only those persons who do not shave themselves? [Jacquette]