In my Sunday school class the focus was marriage or divorce, "The rapidly increasing divorce rate," remarked one member of the group, "indicates that America is indeed becoming the land of the free."
"Yes," replied the prosaic friend, "but the continued marriage rate suggests that America is still the home of the brave."
Jean-Gaston DarbouxBorn 14 Aug 1842; died 23 Feb 1917 at age 74.French mathematician whose work on partial differential equations introduced a new method of integration (the Darboux integral) and contributed to infinitesimal geometry. He wrote a paper in 1870 on differential equations of the second order in which he presented the Darboux integral. In 1873, Darboux wrote a paper on cyclides and between 1887-96 he produced four volumes on infinitesimal geometry, including a discussion of one surface rolling on another surface. In particular he studied the geometrical configuration generated by points and lines which are fixed on the rolling surface. He also studied the problem of finding the shortest path between two points on a surface.« |
