Checked content

File:4CT Inadequacy Example.svg

Description Diagram showing the faliure of the Four Colour Theorem to cope with a map when non-contiguous regions are forced to be the same colour (regions labelled A).
Date 16 February 2007
Source Based on a this raster image by Wapcaplet on en.wikipedia.
Author Inductiveload
Permission
( Reusing this file)
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.

w:en:Creative Commons
attribution share alike		 This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.
This licensing tag was added to this file as part of the GFDL licensing update.
The following pages on Schools Wikipedia link to this image (list may be incomplete):

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

Background information

Wikipedia for Schools was collected by SOS Children's Villages. In 133 nations around the world, SOS Childrens Villages works to bring better education and healthcare to families in desperate need of support. You can help by sponsoring a child.