File:Bing's Dogbone.tiff

Bing's_Dogbone.tiff (481 × 208 pixels, file size: 78 KB, MIME type: image/tiff)

Summary

Media data and Non-free use rationale
Description	This figure illustrates one state of R.H. Bing's so-called "dogbone" construction, which was used to prove the n-dimensional Poincaré Conjecture
Author or copyright owner	R.H. Bing
Source (WP:NFCC#4)	Bulletin of the American Mathematical Society
Date of publication	1963
Use in article (WP:NFCC#7)	Dogbone space
Purpose of use in article (WP:NFCC#8)	The first stage of the construction of the doggone space
Not replaceable with free media because (WP:NFCC#1)	n.a.
Not replaceable with textual coverage because (WP:NFCC#1)	The figure illustrates necessarily spatial information that is not possible to know from the article alone
Minimal use (WP:NFCC#3)	I have only used the photo critical to understanding the construction of the space. I have used nothing else, in particular– no text, from the article appearing in the Bulletin or any other published source.
Respect for commercial opportunities (WP:NFCC#2)	n.a.
Fair useFair use of copyrighted material in the context of Dogbone spacehttp://70.231.62.181/index.php/File:Bing%27s_Dogbone.tifftrue

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To illustrate the subject in question
Where no free equivalent is available or could be created that would adequately give the same information
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	Date/Time	Dimensions	User	Comment
current	01:09, 11 February 2018	481 × 208 (78 KB)	imported>Chevin	#REDIRECT Ugo Ihemelu {{R from full name}}

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