[MATH]N维实数域与一维实数域等势
N维实数平面与实数轴等势的构造(0,1)(0,1)(0,1)与实数域R\mathbb{R}R等势(0,1)(0,1)(0,1)与(0,1)×(0,1)(0,1)×(0,1)(0,1)×(0,1)等势(0,1)(0,1)(0,1)与(0,1)N(0,1)^N(0,1)N等势结论
(0,1)(0,1)(0,1)与实数域R\mathbb{R}R等势
取映射: f(x)=tan((x−12)π)f(x)=\tan((x-\frac{1}{2})\pi)f(x)=tan((x−21)π)
可知fff为(0,1)(
原创
2020-09-07 13:33:00 ·
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