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第14部分over-industrialized dismantle chunkdelusion adjustment organically-grown sheer snap insurmountable whine feverish overwhelm pesticide overpopulated incessantly listeria worldwidemercializatio
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第14部分Rome pilot flyStockholm return Bombay train MadridGeneva return Athens plenty Berlin pence station Sydney catch try may still cost why pound penny retire move worth miss New York person Tokyopoor
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第14部分reinforce delicate vapid apaniment ninepin lash chant earthquakesoothe susceptible wriggle graph blandishment slumber uniquely legibly transverse particle pine subservient gravitational techn
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循环群离散数学 第14讲上一讲内容的回顾同构与同构映射同态与同态映射满同态同构、同态与系统性质的保持循环群群中元素的阶循环群的定义循环群中的生成元素循环群的子群无限循环群与整数加群同构有限循环群与相应的剩余加群同构有限群的生成子群设G是有限群,a?G,构造G的子集H如下:H = {ak | k是正整数 } 则H构成G的子群(H是封闭的),称为a生成的子群 ?a?显然:H中元素的个数即满足ak=eG
循环群离散数学 第14讲上一讲内容的回顾同构与同构映射同态与同态映射自同态与自同构同构、同态与系统性质的保持同态核与自然同态群同态基本定理循环群群中元素的阶循环群的定义循环群中的生成元素循环群的子群无限循环群与整数加群同构有限循环群与相应的剩余加群同构群中元素的阶 定义 设a是群(G,*)中任一元素。正整数r是a的阶:ar = e (e是群G的单位元素)对任意正整数k, 若ak = e, 则k ?
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