# Coloring Polyhedra Given by Map Projections

Requires a Wolfram Notebook System

Interact on desktop, mobile and cloud with the free Wolfram CDF Player or other Wolfram Language products.

Requires a Wolfram Notebook System

Edit on desktop, mobile and cloud with any Wolfram Language product.

This Demonstration provides exercises of coloring polyhedra given by map projections using four colors. A proper coloring of a polyhedron colors the faces of so that no two faces that meet along an edge have the same color. According to the four-color theorem, four colors suffice for a planar map or a simply connected polyhedron (one where any closed path on the surface can be contracted to a point).

[more]
Contributed by: Izidor Hafner (November 2014)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

detailSectionParagraph## Permanent Citation

"Coloring Polyhedra Given by Map Projections"

http://demonstrations.wolfram.com/ColoringPolyhedraGivenByMapProjections/

Wolfram Demonstrations Project

Published: November 10 2014