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Four Color Theorem Intro
written by Jim Loy
This informal introduction by Jim Loy to the four color theorem is designed specifically for a general, non-technical audience. Using simple language, examples and images, Loy explains the theorem and how it was proven by researchers. The author also briefly shows how the theorem became a part of the graph theory by displaying a map than the equivalent graph.
http://web.archive.org/web/20130730063148/http://www.jimloy.com/ge...
Subjects Levels Resource Types
Other Sciences
- Mathematics
- Informal Education
- Reference Material
= Article
- Audio/Visual
= Image/Image Set
Intended Users Formats Ratings
- General Publics
- text/html
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Access Rights:
Free access
Restriction:
© 1999 Jim Loy
Keywords:
angles, four color theorem, graph, graph theory, lines, map, vertices
Record Creator:
Metadata instance created July 30, 2010 by Foha Rafiq
Record Updated:
August 12, 2016 by Lyle Barbato
Last Update
when Cataloged:
January 1, 1999
Other Collections:

ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
J. Loy, (1999), WWW Document, (http://web.archive.org/web/20130730063148/http://www.jimloy.com/geometry/4color.htm).
AJP/PRST-PER
J. Loy, Four Color Theorem Intro (1999), <http://web.archive.org/web/20130730063148/http://www.jimloy.com/geometry/4color.htm>.
APA Format
Loy, J. (1999, January 1). Four Color Theorem Intro. Retrieved May 2, 2025, from http://web.archive.org/web/20130730063148/http://www.jimloy.com/geometry/4color.htm
Chicago Format
Loy, Jim. Four Color Theorem Intro. January 1, 1999. http://web.archive.org/web/20130730063148/http://www.jimloy.com/geometry/4color.htm (accessed 2 May 2025).
MLA Format
Loy, Jim. Four Color Theorem Intro. 1999. 1 Jan. 1999. 2 May 2025 <http://web.archive.org/web/20130730063148/http://www.jimloy.com/geometry/4color.htm>.
BibTeX Export Format
@misc{ Author = "Jim Loy", Title = {Four Color Theorem Intro}, Volume = {2025}, Number = {2 May 2025}, Month = {January 1, 1999}, Year = {1999} }
Refer Export Format

%A Jim Loy %T Four Color Theorem Intro %D January 1, 1999 %U http://web.archive.org/web/20130730063148/http://www.jimloy.com/geometry/4color.htm %O text/html

EndNote Export Format

%0 Electronic Source %A Loy, Jim %D January 1, 1999 %T Four Color Theorem Intro %V 2025 %N 2 May 2025 %8 January 1, 1999 %9 text/html %U http://web.archive.org/web/20130730063148/http://www.jimloy.com/geometry/4color.htm


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Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

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