作者查詢 / yusd24
作者 yusd24 在 PTT [ Math ] 看板的留言(推文), 共378則
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2F推: Stone--Weierstrass06/07 21:50
17F推: 末項不會收斂到0所以發散?04/01 11:58
2F推: 你的意思是兩個一次式有共同解?02/22 21:46
1F推: |n!/n^n|=<1/n11/05 08:16
3F推: 顯然 cosk 不為零,等式同除 cos^2k,解 tan 的一08/10 22:06
4F→: 元二次08/10 22:06
5F→: 方程式即可。08/10 22:06
2F推: 29908?06/11 19:33
2F推: N=10001可以嗎XD?04/28 20:42
6F推: N=937604/28 20:59
7F→: N^2-N=N(N-1) 是 10000=2^5*5^5 的倍數04/28 21:00
8F→: N, N-1 又互質, 所以 2跟5 都要分在同一邊04/28 21:01
11F推: 討論一下,我沒有很仔細討論,不確定有沒有其他解04/28 21:05
13F→: 啊!我錯了xd04/28 21:06
14F→: 難怪我想說怎麼那麼大, 原來只要比16跟625..04/28 21:06
17F推: 次數多沒差,也是正整數解04/28 21:15
18F→: 可是這樣有可能會少答案04/28 21:15
51F推: 是 Grothendieck (跪02/23 08:02
2F推: 教微積分的確是很深奧XD11/05 07:28
7F推: 如果=12, 則 H normal in G, 矛盾.09/08 22:23
9F→: 因為sylow p取兩次normalizer=取一次 normalizer09/08 22:24
12F推: 假設 H=N_G(P), L=N_G(H). 有 H<L, 假設x屬於L09/08 22:59
13F→: 則 xPx^{-1}<xHx^{-1}=H09/08 23:00
14F→: 所以xPx^{-1}也是H的Sylow group, 因此存在y屬於H09/08 23:00
15F→: 使得xPx^{-1}=yPy^{-1}=P, x屬於H09/08 23:02
16F推: 其實上面已經說明完了!不需要再說明一次吧?09/12 10:45