Charles Lewis Radin is an American mathematician, known for his work on aperiodic tilings and in particular for defining the pinwheel tiling and, with John Horton Conway, the quaquaversal tiling.
[1] Radin did his undergraduate studies at City College of New York, graduating in 1965,[2] and then did his graduate studies at the University of Rochester, earning a Ph.D. in 1970 under the supervision of Gérard Emch.
[2][3] Since 1976 he has been on the faculty of the University of Texas at Austin.
In 2012 he became a fellow of the American Mathematical Society.
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