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[数论] 存在性证明3

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hbghlyj posted 2019-7-25 15:29 |Read mode

给定整数a,b，证明:存在整数x,y,u,v，使得a=xu,b=yv,(x,y)=1且[a,b]=xy
提示：(a,b)·[a,b]=|ab|

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2025-6-8 15:49 GMT+8

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