[代數] G滿足左右消去律則G是GROUP
要證明
假設a*b=a*c => b=c
b*a=c*a => b=c
則G在*下是一個GROUP
然後有一個HINT:
想一想(a1,a2,....,an)和(ga1,ga2,....,gan)有什麼關係
我們同學想了好久想不太出來
想問各位大大有沒有好的證明方法
大大的感恩<(_ _)>
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