[數撚圍爐區] 將一個波分成五份, 然後砌兩個同原本一樣的波的鬼故事 (108)

Not funny…
I wana cry when i read the one abt parallel lines 😖

P 牌cant upvote yet . Just wana give👍🏻and thanks
有d learning objective read up ha 🙇🏻‍♀️

let's start cyclic extension , then solvable extension, then solvable by radical

好接近

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Hilbert Theorem 90

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cyclic extension ✅
solvable extension
solvable by radical

回憶
n >= 5
Sn is not solvable for n >= 5
Sn do not have any other subnormal series other than Sn - An - e(consider N >= An and N intersect with An, and given that An is simple)

Suppose An is solvable
(Then by its simpleness, we can only find e under it, so A5/{e} = A5, but ever since An n>= 4, but not abelian)
Hence Sn is therefore not solvable over n = 5

Suppose An is simple or suppose An has its subnormal series factor being abelian

simple solvable

ai

如果完咗呢度，我估我要回頭做返啲題目先，然後暫時休息吓，跟住返返vector calculus

Sorry got caught up with work lately
No time for self study 😪
Appreciate 教學post 👍🏻🫶🏻

But i m too layman…大家唔介意比我問d trivial 8 chi questions gea wa
Could u please pm me?
https://t.me/gmountainwitch