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Iraida lopez-king

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Look carefully caricature and guess the name of musician.

Jean-Gaston Darboux

Died 23 Feb 1917 at age 74 (born 14 Aug 1842).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.«

The children had all been phot...

The children had all been photographed, and the teacher was trying to persuade them each to buy a copy of the group picture. "Just think how nice it will be to look at it when you are all grown up and say, 'There's Jennifer; she's a lawyer,' or 'That's Michael, he'sa doctor.'"
A small voice at the back of the room rang out, "And there's the teacher; ...she's dead."
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