File:Bing's Dogbone.tiff

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

Summary

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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 space//en.wikipedia.org/wiki/File:Bing%27s_Dogbone.tifftrue

Licensing

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File history

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Date/TimeThumbnailDimensionsUserComment
current01:09, 11 February 2018Thumbnail for version as of 01:09, 11 February 2018481 × 208 (78 KB)Ronhjones (talk | contribs)Reduced to NFC guideline
05:14, 16 February 2015No thumbnail519 × 224 (66 KB)Davidfsnyder (talk | contribs)Uploading an excerpt from a non-free work using File Upload Wizard

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