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Find number abc

If ab1b4 - c6b63 = cba1 find number abc. Multiple solutions may exist.

Correct answers: 2

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I tried to re-marry my ex-wife…
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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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