"Marion Gray"@en . . . . . "Scottish mathematician" . . . "Gray, Marion Cameron"@en . "1979Z"^^ . . . "Marion C. Gray"@en . "1902Z"^^ . "1902-03-26Z"^^ . "Dr. Marion Gray (26 March 1902 \u2013 16 September 1979) was a Scottish mathematician who discovered a graph with 54 vertices and 81 edges while working at American Telephone & Telegraph. The graph is commonly known as the Gray graph."@en . . "1979-09-16Z"^^ .