File:Alexander horned sphere construction (Alexander 1924).jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	00:26, 9 February 2021		896 × 592 (77 KB)	commons>Adumbrativus	Uploaded a work by Alexander, J. W. from Alexander, J. W. (1924), "An Example of a Simply Connected Surface Bounding a Region which is not Simply Connected", Proceedings of the National Academy of Sciences of the United States of America, National Academy of Sciences, 10 (1): 8–10 with UploadWizard

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