. "1851-03-08Z"^^ . . "George Chrystal (1851\u20131911) was a Scottish mathematician."@en . . "1911-11-03Z"^^ . . "1911Z"^^ . . "1851Z"^^ . . . . . . . . . . "Chrystal, George"@en . "British mathematician" . . "George Chrystal"@en . . . . . .