>>394 追加
>>390
>そもそもラグランジュ分解式がどういう式か分かってない
>巡回群で不変な式（だが、対称群では不変でない）
>ガロア分解式は対称群で不変な式

上記はまさに”自爆手”です
追加資料を投下しますよ
勉強してね　；ｐ）

(参考)
https://en.wikipedia.org/wiki/Resolvent_(Galois_theory)
Resolvent (Galois theory)
Terminology
・A Galois resolvent is a resolvent such that the resolvent invariant is linear in the roots.
・The Lagrange resolvent may refer to the linear polynomial
　琶=0〜n-1 X_i ω^i
　where ω is a primitive nth root of unity.

https://math.stackexchange.com/questions/316731/galois-resolvent-and-elementary-symmetric-polynomials-in-a-paper-by-noether
math.stackexchange
'Galois Resolvent' and elementary symmetric polynomials in a paper by Noether
　asked Feb 28, 2013 InvisiblePanda

http://www.seminariomatematico.polito.it/rendiconti/cartaceo/53-3/207.pdf
Rend. Sem. Mat. Univ. Poi. Torino Voi. 53, 3 (1995) Number Theory
RESOLVENTS AND GALOIS GROUPS 　L. Cangelmi