Robion Kirby

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Robion Cromwell Kirby is a professor of mathematics at the University of California, Berkeley who works in low-dimensional topology. He coinvented the Kirby-Siebenmann invariant for classifying the PL-structures on a topological manifold, in which his famous torus trick is fundamental, and proved the fundamental result on the Kirby calculus, a method for describing 3-manifolds and smooth 4-manifolds by surgery on framed links.

He received his PhD from the University of Chicago in 1965.

In 1971, he was awarded the Oswald Veblen Prize in Geometry by the American Mathematical Society. He was elected to the National Academy of Sciences in 2001.

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