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File:Schattschneider Reconstruction of Escher's Coxeter Diagram.jpg

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Schattschneider_Reconstruction_of_Escher's_Coxeter_Diagram.jpg (440 × 227 pixels, file size: 42 KB, MIME type: image/jpeg)

Summary

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Media data and Non-free use rationale
Description Doris Schattschneider's reconstruction of the diagram of hyperbolic tiling sent by the graphic artist M. C. Escher to the mathematician H. S. M. Coxeter.
Author or
copyright owner
Doris Schattschneider after M. C. Escher
Source (WP:NFCC#4) Original publication: The Mathematical Side of M. C. Escher, Notices of the AMS, 57, 6, 706-718, 2010

Immediate source: http://www.ams.org/notices/201006/rtx100600706p.pdf

Date of publication 2010
Use in article (WP:NFCC#7) M. C. Escher
Purpose of use in article (WP:NFCC#8) The diagram shows the depth of the mathematical research undertaken by Escher, as understood by a practising mathematician.
Not replaceable with
free media because
(WP:NFCC#1)
There isn't one; the diagram could be copied and redrawn using a graphics tool but that would still be breaching Schattschneider's and Escher's copyright in the image.
Minimal use (WP:NFCC#3) The image is the only analytic diagram used in the article. It is used only in this one article. It is greatly reduced in size.
Respect for
commercial opportunities
(WP:NFCC#2)
The image has long been published in an academic paper; both it and the rest of that paper are too technical to be highly commercial, but are of encyclopedic interest for the understanding of Escher's life and work.
Fair useFair use of copyrighted material in the context of M. C. Escher//en.wikipedia.org/wiki/File:Schattschneider_Reconstruction_of_Escher%27s_Coxeter_Diagram.jpgtrue

Licensing

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File history

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Date/TimeThumbnailDimensionsUserComment
current10:48, 4 November 2015Thumbnail for version as of 10:48, 4 November 2015440 × 227 (42 KB)Chiswick Chap (talk | contribs)Uploading a non-free file using File Upload Wizard

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