ABSTRACT
This volume of Bertrand Russell's Collected Papers finds Russell focused on writing Principia Mathematica during 1905–08. Eight previously unpublished papers shed light on his different versions of a substitutional theory of logic, with its elimination of classes and relations, during 1905-06. A recurring issue for him was whether a type hierarchy had to be part of a substitutional theory. In mid-1907 he began writing up the final version of Principia, now using a ramified theory of types, and eleven unpublished drafts from 1907-08 deal with this. Numerous letters show his thoughts on the process.
The volume's 80-page introduction covers the evolution of his logic from 1896 until 1909, when volume I of Principia went to the printer.
TABLE OF CONTENTS
part I|413 pages
No-Classes Theories and Substitutional Theories 1905–06
part II|71 pages
Theories of Truth 1906–08
part III|170 pages
From Substitutional Theories to the Ramified Theory of Types 1906–08
part IV|42 pages
Reviews on Foundations of Mathematics
part V|41 pages
Other Philosophical Reviews and Writings