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1Submitted to the Department of Mathematics, University of Hamburg (Germany) in 2000, the professorial dissertation was successfully defended on 22 January 2002.
2Constantin Carathéodory (1873–1950).
3D. Hilbert, Vortrag auf der Jahrestagung zur Variationsrechnung (1899).
4Nadeshda Gernet, Untersuchungen zur Variationsrechnung. Göttingen (1902, Supervisor D. Hilbert).
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