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Werner Fenchel, German-Danish mathematician and academic (born 1905)

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Werner Fenchel
German mathematician (1905–1988)
Moritz Werner Fenchel was a German-Danish mathematician known for his contributions to geometry and to optimization theory. Fenchel established the basic results of convex analysis and nonlinear optimization theory which would, in time, serve as the foundation for nonlinear…Source: Wikipedia (CC BY-SA)