Walter Neumann
From Infogalactic: the planetary knowledge core
Walter David Neumann (born 1946) is a German mathematician who works in topology, geometric group theory, and singularity theory. He is a professor at Columbia University. Neumann obtained his Ph.D. under the joint supervision of Friedrich Hirzebruch and Klaus Jänich at the University of Bonn in 1969.[1]
He is a son of the mathematicians Bernhard Neumann and Hanna Neumann.[1] His brother Peter M. Neumann is a mathematician too.
He is a fellow of the American Mathematical Society.[2]
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