https://en.wikipedia.org/wiki/Benoit_Mandelbrot
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Mandelbrot left IBM in 1987, after 35 years and 12 days, when IBM decided to end pure research in his division.[33] He joined the Department of Mathematics at Yale, and obtained his first tenured post in 1999, at the age of 75.[34] At the time of his retirement in 2005, he was Sterling Professor of Mathematical Sciences.
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