Ideas from 'Reals by Abstraction' by Bob Hale [1998], by Theme Structure

[found in 'The Reason's Proper Study' by Hale,B/Wright,C [OUP 2003,978-0-19-926632-6]].

green numbers give full details    |     back to texts     |     expand this idea

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / g. Real numbers
The real numbers may be introduced by abstraction as ratios of quantities [Hale/Wright]