(Awake, June 13), July 24, 1934, the Austrian mathematician Hans Hahn's death. Hans Hahn (Hans Hahn, in 1879 �� 1934 July 24 day),


Austrian mathematician, made a lot of contribution in functional analysis, topology, collections theory, variational method, real analysis, order theory. He is also active in philosophy, is one of the Vienna Circle.
Hahn mathematics achievement including the famous Hahn - Banach theorem, and (independently derived by Banach and Steinhaus) uniform bounded principle. Other theorem Hahn separation theorem, the VITA Lee - Hahn - Saks theorem, Hahn - Matsu Kai Weiqi theorem and Hahn embedding theorem.
Comment: the predecessors scientists learn to do as people.