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Is it true that every contractible open subset of $\mathbb{R}^n$ is homeomorphic to $\mathbb{R}^n$?

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    The title is somewhat opaque...2011-08-02
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    Related MathOverflow questions: http://mathoverflow.net/questions/64192/is-there-a-classification-of-open-subsets-of-euclidean-space-up-to-homeomorphism, http://mathoverflow.net/questions/4468/what-are-the-open-subsets-of-mathbbrn-that-are-diffeomorphic-to-mathbb2011-08-02

1 Answers 1