. . "Henri L\u00E9on Lebesgue ForMemRS (French: [\u0251\u0303\u0281i le\u0254\u0303 l\u0259b\u025B\u0261]; June 28, 1875 \u2013 July 26, 1941) was a French mathematician most famous for his theory of integration, which was a generalization of the 17th century concept of integration\u2014summing the area between an axis and the curve of a function defined for that axis. His theory was published originally in his dissertation Int\u00E9grale, longueur, aire (\"Integral, length, area\") at the University of Nancy during 1902."@en . . . . . "1941-07-26Z"^^ . . . . . . . . "1875-06-28Z"^^ . "Henri Lebesgue"@en . . . . . . .