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On a topological characterization of the real line |
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| Authors: | Jürg Rätz |
| Institution: | 1. Mathematisches Institut der, Universit?t Bern, Sidlerstr. 5, CH-3012 Bern, Schweiz |
| Abstract: | M.C. Zdun 17] asked whether a subset S of R2 such that R × S is homeomorphic to R2 must be homeomorphic to R, all these sets being endowed with the usual topologies. We show that the answer is affirmative. |
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