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Ideas for 'On What Grounds What', 'Semantic Necessity' and 'Meditations'

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3 ideas

6. Mathematics / A. Nature of Mathematics / 1. Mathematics

2430	I can learn the concepts of duration and number just from observing my own thoughts [Descartes]

2252	Surely maths is true even if I am dreaming? [Descartes]

6. Mathematics / C. Sources of Mathematics / 1. Mathematical Platonism / a. For mathematical platonism

13741

If 'there are red roses' implies 'there are roses', then 'there are prime numbers' implies 'there are numbers' [Schaffer,J]