A part of the theory of mathematical groups concerned esp. 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 extraction of nth roots.

【数】伽罗瓦理论(数群理论的一部分，尤指有关已知数域中的带系数多项式的解可以在域中籍反覆运算及开n次方得出的条件)。