作者Lheavens (Lash)
看板Math
标题[代数] 环的例子
时间Sun Jan 9 20:43:19 2011
What is a ring without unity and not commutative?
以下的正确吗?
A commutative ring with out unity and not a integral domain→Zmod4's {0,2}
A commutative ring with unity and not a integral domain→Z_8
A ring with unity but not commutative→ M_2(Z) (2阶矩阵 元素为整数)
A integral domain but not a field→Z
最上面那个问题想了又想找不到例子..拜托各位了
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1F：→ Sfly :M_2(2Z) 01/09 20:46
2F：→ Lheavens :我北七了..感谢 01/09 20:49
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※ 编辑: Lheavens 来自: 140.115.213.226 (01/09 23:45)
4F：推 ntnusliver :2Z x 2Z 01/12 19:12