1. Logical operations

   • Vann McGee

   OriginalPaper Pages: 567 - 580

2. Aspects of analytic deduction

   • Athanassios Tzouvaras

   OriginalPaper Pages: 581 - 596

3. The Definability of the set of natural numbers in the 1925 Principia Mathematica

   • Gregory Landini

   OriginalPaper Pages: 597 - 615

4. Logical consequence: A defense of Tarski

   • Greg Ray

   OriginalPaper Pages: 617 - 677