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Ideas for 'Thinking About Mathematics', 'On Husserl' and 'On the Introduction of Transfinite Numbers'

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4 ideas

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / b. Types of number

8763	The number 3 is presumably identical as a natural, an integer, a rational, a real, and complex [Shapiro]

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / c. Priority of numbers

13489

Von Neumann treated cardinals as a special sort of ordinal [Neumann, by Hart,WD]

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

12336

A von Neumann ordinal is a transitive set with transitive elements [Neumann, by Badiou]

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / h. Reals from Cauchy

18249

Cauchy gave a formal definition of a converging sequence. [Shapiro]