Combining Philosophers
Ideas for Peter B. Lewis, Eustachius a Sancto Paulo and Alex Orenstein
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6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / b. Types of number
8454

The whole numbers are 'natural'; 'rational' numbers include fractions; the 'reals' include root2 etc. [Orenstein]

6. Mathematics / C. Sources of Mathematics / 6. Logicism / a. Early logicism
8473

The logicists held that isamemberof is a logical constant, making set theory part of logic [Orenstein]
