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1~100的基數有50個基數是計算發展速度、增長速度時用的基期水准.基數也是底數的別稱.康托爾在1874年~1884年引入最原始的集合論(現稱樸素集合論)時,首次引入基數概念.他最先考慮的是集合{1,2,3}和{2,3,4},…
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