■

Journal の

• Logica Universalis, Special Issue: Perspectives on the History and Philosophy of Modern Logic: Van Heijenoort Centenary, vol. 6, nos. 3-4, 2012

から、

• Irving H. Anellis　　''Jean van Heijenoort’s Contributions to Proof Theory and Its History''
• Jaakko Hintikka　　''Which Mathematical Logic is the Logic of Mathematics?''
• Ignacio Angelelli　　''Frege’s Ancestral and Its Circularities''

を入手。