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It was Évariste Galois (1811 -- 1832) who discovered that there exists a radical expression for the roots if and only if the Galois group of the polynomial - initially a permutation group on the roots - is solvable Galois97. But the task itself was impractical in his days. This package is the first public tool which provides a practical method for solving a polynomial algebraically. The implementation is based on Galois' ideas and the algorithm is described in Distler05.

Évariste Galois (French: [evaʁist ɡalwa]) (25 October 1811 - 31 May 1832) was a French mathematician born in Bourg-la-Reine. While still in his teens, he was able to determine a necessary and sufficient condition for a polynomial to be solvable by radicals, thereby solving a long-standing problem. His work laid the foundations for Galois theory and group theory, two major branches of abstract algebra, and the subfield of Galois connections. He was the first to use the word "group" (French: groupe) as a technical term in mathematics to represent a group of permutations. A radical Republican during the monarchy of Louis Philippe in France, he died from wounds suffered in a duel under questionable circumstances[1] at the age of twenty.

BY: JOEVANCANDIDO =)

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Q: Greek mathematician who discover radical expression?
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