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Hahn, Hans, b. Vienna, Sept. 27, 1879, d. Vienna, July 24, 1934, mathematician. from 1905 taught in Vienna and in Innsbruck, in 1909 in Chernovtsy, in 1916 in Bonn, 1921-1934 in Vienna. Conducted research in the fields of variation calculation, set theory, real functions and analysed epistemological questions.
Works: Theorie der reellen Funktionen I, 1921; Reelle Funktionen I, 1932. - Edition: Collected works - Gesammelte Abhandlungen, ed. by L. Schmetterer, 3 vols., 1995-1997.
Literature: ÖBL; NDB.