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Hopf, Heinz


Mathematician, born in Wroclaw, Poland (formerly Breslau, Germany). After war service he studied at Berlin and Göttingen universities, where he met the Russian topologist Pavel Alexandrov with whom he wrote the influential Topologie (1935). In 1931 he became professor at Zürich. One of Europe's leading topologists, he worked on many aspects of combinatorial topology, including homotopy theory and vector fields.

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