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Bing's_Dogbone.tiff (481 × 208 pixels, file size: 78 KB, MIME type: image/tiff)
Summary
| 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
 | This work is copyrighted (or assumed to be copyrighted) and unlicensed. It does not fall into one of the blanket acceptable non-free content categories listed at Wikipedia:Non-free content § Images or Wikipedia:Non-free content § Audio clips, and it is not covered by a more specific non-free content license listed at Category:Wikipedia non-free file copyright templates. However, it is believed that the use of this work:
qualifies as fair use under United States copyright law. Any other uses of this image, on Wikipedia or elsewhere, may be copyright infringement. See Wikipedia:Non-free content and Wikipedia:Copyrights. |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:09, 11 February 2018 |  | 481 × 208 (78 KB) | Ronhjones (talk | contribs) | Reduced to NFC guideline |
| 05:14, 16 February 2015 | No thumbnail | 519 × 224 (66 KB) | Davidfsnyder (talk | contribs) | Uploading an excerpt from a non-free work using File Upload Wizard |
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File usage
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Metadata
This page was last edited on 18 February 2018, at 03:00