ABSTRACT

"The philosophy of mathematics will naturally be expected to deal with questions at the frontier of knowledge, as to which comparative certainty is not yet attained. But separation of such questions is hardly likely to be fruitful unless the more scientific parts of mathematics are known. A book dealing with those parts may, therefore, claim to be an introduction to mathematical philosophy..." - Bertrand Russell, from the Preface

First published in 1919, Introduction to Mathematical Philosophy shows Russell drawing on his formidable knowledge of philosophy and mathematics to write a brilliant introduction to the subject. Russell explains that mathematics can be approached in two distinct directions: one that is driven by a mechanical kind of simplicity and builds towards complexity, from integers to fractions and real numbers to complex ones; and one that searches for abstractness and logical simplicity by asking what general principles underlie mathematics.

From here Russell introduces and explains, in his customary pellucid prose, the definition of numbers, finitude, correlation and relation, mathematical limits, infinity, propositional descriptions and classes. Russell concludes with a fascinating summary of the relationship between mathematics and logic, of which he states "logic is the youth of mathematics."

This Routledge Classics edition includes a new Foreword by Michael Potter.

chapter 1|10 pages

The Series of Natural Numbers

chapter 2|9 pages

Definition of Number

chapter 3|9 pages

Finitude and Mathematical Induction

chapter 4|12 pages

The Definition of Order

chapter 5|9 pages

Kinds of Relations

chapter 6|10 pages

Similarity of Relations

chapter 7|14 pages

Rational, Real, and Complex Numbers

chapter 8|12 pages

Infinite Cardinal Numbers

chapter 9|7 pages

Infinite Series and Ordinals

chapter 10|9 pages

Limits and Continuity

chapter 11|10 pages

Limits and Continuity of Functions

chapter 12|13 pages

Selections and the Multiplicative Axiom

chapter 13|12 pages

The Axiom of Infinity and Logical Types

chapter 14|11 pages

Incompatibility and the Theory of Deduction

chapter 15|11 pages

Propositional Functions

chapter 16|13 pages

Descriptions

chapter 17|12 pages

Classes

chapter 18|12 pages

Mathematics and Logic