Like Descartes and Pascal Hans Hahn (1879-1934) was both an eminent mathematician and a highly
influential philosopher. He founded the Vienna Circle and was the teacher of both Kurt Gödel
and Karl Popper. His seminal contributions to functional analysis and general topology had a
huge impact on the development of modern analysis. Hahn's passionate interest in the
foundations of mathematics vividly described in Sir Karl Popper's foreword (which became his
last essay) had a decisive influence upon Gödel. Like Freud Musil and Schönberg Hahn became
a pivotal figure in the feverish intellectual climate of Vienna between the two wars.Volume 1:
The first volume of Hahn's Collected Works contains his path-breaking contributions to
functional analysis the theory of curves and ordered groups. These papers are commented on by
Harro Heuser Hans Sagan and Laszlo Fuchs. Volume 2: The second volume deals with functional
analysis real analysis and hydrodynamics. The commentaries are written by Wilhelm Frank Davis
Preiss and Alfred Kluwick. Volume 3: In the third volume Hahn's writings on harmonic analysis
measure and integration complex analysis and philosophy are collected and commented on by
Jean-Pierre Kahane Heinz Bauer Ludger Kaup and Christian Thiel. This volume also contains
excerpts of Hahn's letters and accounts by his students and colleagues.
