# Galois theory

## noun

Ga·lois theory
(ˌ)gal-ˈwä-

ˈgal-ˌwä-

**:**a part of the theory of mathematical groups concerned especially with the conditions under which a solution to a polynomial equation with coefficients in a given mathematical field can be obtained in the field by the repetition of operations and the extraction of nth roots

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Merriam-Webster unabridged
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