→ znmkhxrw :1→trivial ,2、3、5→prime order ,4=2^2→prime^2 06/13 16:42
→ znmkhxrw :they are all cyclic → abelian 06/13 16:42
→ RoamingGhost:wrong. Z2+Z2 has order 4 but not cyclic 06/14 01:42
請問
如何證明
│G│<= 5 則 G is abelian (<= 是小於等於)
謝謝
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