| Date | Text | |
|---|---|---|
09 Apr 1869
American Museum of Natural History incorporated |
American Museum of Natural History incorporated In 1869, a society in the name of the American Museum of Natural history was incorporated. Its founding had been urged in a letter, dated 30 Dec 1868, and sent to Andrew H. Green, Comptroller of Central Park, New York, signed by 19 persons, including Theodore Roosevelt, A.G. Phelps Dodge and J. Piermont Morgan. They wrote: “A number of gentlemen having long desired that a great Museum of Natural History should be established in Central Park, and having now the opportunity of securing a rare and very valuable collection as a nucleus of such Museum, the undersigned wish to enquire if you are disposed to provide for its reception and development.” Their suggestion was accepted by the Park officials. Collections were purchased, and thus the great museum began. It opened 27 Apr 1871. |
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09 Apr 1869
Élie-Joseph Cartan |
birth Élie-Joseph Cartan Born 9 Apr 1869; died 6 May 1951 at age 82. French mathematician who greatly developed the theory of Lie groups and contributed to the theory of subalgebras. By 1904 Cartan was turning to papers on differential equations and from 1916 on he published mainly on differential geometry. Cartan also published work on relativity and the theory of spinors. He is certainly one of the most important mathematicians of the first half of the 20th century. |
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