推 znmkhxrw :意思是他的proper subgroup只有一個且order 3? 12/30 23:49
→ znmkhxrw :拍謝我會錯意 12/30 23:50
→ znmkhxrw :喔喔~~我知道嚕~~因為6=2*3 2,3 are primes 12/30 23:51
→ znmkhxrw :by chauchy's thm, there exist an element of order 12/30 23:53
推 yusd24 :This follows from 3rd Sylow theorem 12/31 00:02
推 znmkhxrw :我回文了XD 一到四樓別理我@@" 12/31 00:15