Let X be a metric space, and C be the Cantor set (equipped with the standard topology).
Let f:X→C be a uniformly continuous function. Assume that f is
a bijection. Does it follow that f is a homeomorphism?
I know that if X is compact, then the answer is yes. This follows from the following theorem:
A continuous bijection from a compact set to a Hausdorff space is
homeomorphism.
I am hoping that the condition "uniform continuity" is strong enough to cover the case even when K is not compact.
I appreciate any help :)
Answer
Let ρ be the discrete metric on the Cantor set C, and let d be the usual metric; then the identity map from ⟨C,ρ⟩ to ⟨C,d⟩ is a uniformly continuous bijection but not a homeomorphism.
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