. . . . . . "Cyrus Derman (July 16, 1925 \u2013 April 27, 2011) was an American mathematician and amateur musician who did research in Markov decision process, stochastic processes, operations research, statistics and a variety of other fields."@en . . "Cyrus Derman"@en . "American mathematician" . "1925Z"^^ . . . . "2011Z"^^ . "Derman"@en . . . "2011-04-27Z"^^ . . . "Derman, Cyrus"@en . . . "1925-07-16Z"^^ .