- #1
sunjin09
- 312
- 0
I was told the extended real [itex]\hat{R}=R\cup\{-\infty,\infty\}[/itex] is homeomorphic to [0,1], I was wondering if the mapping
[tex]
h: [0,1]\rightarrow\hat{R}, h(x)=\cot^{-1}(\pi x), 0<x<1, h(0)=\infty, h(1)=-\infty
[/tex]
is a valid homeomorphism, so that a metric may be defined by the metric on [0,1]? Thank you.
[tex]
h: [0,1]\rightarrow\hat{R}, h(x)=\cot^{-1}(\pi x), 0<x<1, h(0)=\infty, h(1)=-\infty
[/tex]
is a valid homeomorphism, so that a metric may be defined by the metric on [0,1]? Thank you.