Template:Did you know nominations/Circle Limit III

Circle Limit III

 * ... that M. C. Escher's woodcut Circle Limit III was inspired by an illustration (image pictured) of a hyperbolic tessellation in a paper by H. S. M. Coxeter?
 * Reviewed: Sergei Azarov

Created by David Eppstein (talk). Self nominated at 23:53, 3 July 2013 (UTC).


 * Symbol question.svg From what I'm seeing this: "Coxeter's figure depicts a tessellation of the hyperbolic plane by right triangles with angles of 30°, 45°, and 90° (a shape that is possible in hyperbolic geometry but not in Euclidean geometry); this tessellation may be interpreted as depicting the lines of reflection and fundamental domains of the (6,4,2) triangle group." supports the ref. Can you put a ref after it? I added an image to the nom. Quite interesting, even though I don't understand all that math. HAHA Pumpkin Sky   talk  12:07, 4 July 2013 (UTC)
 * ✅ I added another ref to this paragraph. —David Eppstein (talk) 17:08, 4 July 2013 (UTC)


 * Symbol confirmed.svg Pumpkin Sky   talk  19:17, 4 July 2013 (UTC)
 * Oh, one final change to the hook, please: I notice someone (not me) added an image of the tessellation in question. It is quite similar to, but not the same as, Coxeter's own copyrighted image (it's a little tilted relative to Coxeter and uses different colors). So could we change the ordering of the callout to the image in the hook to make it clear that it's an image of the same geometric object but not the same image? Something like
 * ALT1 ... that M. C. Escher's woodcut Circle Limit III was inspired by an illustration of a hyperbolic tessellation (image pictured) in a paper by H. S. M. Coxeter?
 * Thanks. —David Eppstein (talk) 19:48, 4 July 2013 (UTC)
 * Symbol confirmed.svg Sure, sounds good for ALT1 Pumpkin Sky   talk  21:31, 4 July 2013 (UTC)