. "Claude-Louis Mathieu"@en . . "1875Z"^^ . "Claude-Louis Mathieu or Louis Mathieu (born in M\u00E2con on 25 November 1783; died 5 March 1875 in Paris) was a French mathematician and astronomer who began his career as an engineer. He worked with the Bureau des Longitudes and tried to determine the distance of the stars."@en . . . "1783-11-25Z"^^ . "1783Z"^^ . . . "French astronomer" . "Mathieu, Claude-Louis"@en . "1875-03-05Z"^^ . .