Armand Borel
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Armand Borel was a Swiss mathematician, born in La Chaux-de-Fonds, and was a permanent professor at the Institute for Advanced Study in Princeton, New Jersey, United States from 1957 to 1993. He worke
Armand Borel in Berkeley, 1975.
Heinz Hopf
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Heinz Hopf was a German mathematician who worked on the fields of dynamical systems, topology and geometry.
Hopf in 1954
