choice. This image is a derivative work of the following images: File:Fundamental_polygon_of_the_Klein_bottle.png licensed with Cc-by-sa-3.0-migrated...
The fundamental polygon of the Klein bottle. This image was generated by Stefan Birkner (squizzz) using Apache's Batik. Source code of the SVG file:...
The fundamental polygon of a Klein bottle. To construct the Klein bottle, join the sides with the same letter together so that the directions of the arrows...
