This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Created an .svg version of the file using Inkscape.. The original can be viewed here: KnotCheckerboard.png: . Modifications made by Ninjatacoshell.

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This image is a derivative work of the following images:

• File:KnotCheckerboard.png licensed with Cc-by-sa-3.0,2.5,2.0,1.0, GFDL
  • 2010-02-11T06:11:02Z Ninjatacoshell 214x184 (11184 Bytes) Redrew using Inkscape so that it's clearer and smoother.
  • 2009-04-25T19:43:57Z Christian.Mercat 214x184 (2686 Bytes) {{Information |Description={{en|1=Checkerboard of black and white zones associated with a regular projection (or knot diagram) of a knot.}} |Source=http://entrelacs.net |Author=Christian Mercat |Date=1997 |Permission= |other_

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