Combining Texts

Ideas for 'teaching', 'The Problem of the Essential Indexical' and 'The Boundary Stones of Thought'

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3 ideas

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / e. Ordinal numbers

18842

Maybe an ordinal is a property of isomorphic well-ordered sets, and not itself a set [Rumfitt]

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / m. One

7485	For Pythagoreans 'one' is not a number, but the foundation of numbers [Pythagoras, by Watson]

6. Mathematics / A. Nature of Mathematics / 5. The Infinite / k. Infinitesimals

18834

Infinitesimals do not stand in a determinate order relation to zero [Rumfitt]