Subject

Mathematics -- Philosophy books

5 free books about mathematics -- philosophy, free to read online. Chapter 1 of any book is free, no account needed.

The Foundations of Science: Science and Hypothesis, The Value of Science, Science and Method

Henri Poincaré

Principia mathematica, vol. 1 (of 3)

Whitehead, Alfred North; Russell, Bertrand

Introduction to Mathematical Philosophy

Bertrand Russell

Principia mathematica, vol. 2 (of 3)

Whitehead, Alfred North; Russell, Bertrand

Auguste Comte