= Hans Hahn (mathematician)
{wiki=Hans_Hahn_(mathematician)}
Hans Hahn (1879–1934) was an Austrian mathematician known for his significant contributions to functional analysis, topology, and the foundations of mathematics. He was a member of the Vienna Circle, a group of philosophers and scientists who were central to the development of logical positivism and scientific philosophy in the early 20th century. Hahn is best remembered for the Hahn-Banach theorem in functional analysis, which is a fundamental result concerning the extension of linear functionals.
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