An Unabridged, Digitally Enlarged Printing Of Volume I of III: Part I - MATHEMATICAL LOGIC - The Theory Of Deduction - Theory Of Apparent Variables - Classes And Relations - Logic And Relations - Products And Sums Of Classes - Part II - PROLEGOMENA TO CARDIANL ARITHMITIC - Unit Classes And Couples - Sub-Classes, Sub-Relations, And Relative Types - One-Many, Many-One, And One-One Relations - Selections - Inductive Relations

Appearance And Reality - The Existence Of Matter - The Nature Of Matter - Idealism - Knowledge By Acquaintance And Knowledge By Description - On Induction - On Our Knowledge Of General Principles - How A Priori Knowledge Is Possible - The World Of Universals - On Our Knowledge Of Universals - On Intuitive Knowledge - Truth And Falsehood - Knowledge, Error, And Probable Opinion - The Limits Of Philosophical Knowledge - The Value Of Philosophy - Bibliographical Note

An Unabridged, Digitally Enlarged Printing Of Volume II Of III With Additional Errata To Volume I: Part III - CARDINAL ARITHMETIC - Definition And Logical Properties Of Cardinal Numbers - Addition, Multiplication And Exponentiation - Finite And Infinite - Part IV - RELATION ARITHMETIC - Ordinal Similarity And Relation-Numbers - Addition Of Relations, And The Product Of Two Relations - The Principle Of First Differences, And The Multiplication And Exponentiation Of Relations - Arithmetic And Relation-Numbers - Part V -SERIES - General Theory Of Series - On Sections, Segments, Stretches, And Derivatives - On Convergence, And The Limits Of Functions

An Unabridged, Digitally Enlarged Printing Of Volume III Of III With Additional Errata To Volumes I And II: Part V - SERIES (Continued) - Well Ordered Series - Finite And Infinite Series And Ordinals - Compact Series, Rational Series, And Continuous Series - Part VI - QUANTITY - Generalization Of Number - Vector-Families - Measurement - Cyclic Families

An unabridged, digitally enlarged printing, with a comprehensive index.