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The Computer Journal 1985 28(1):78-81; doi:10.1093/comjnl/28.1.78
© 1985 by British Computer Society
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A Linear Algorithm for Colouring Planar Graphs with Five Colours

M. H. Williams *

Department of Computer Science, Heriot-Watt University, 79 Grassmarket, Edinburgh, UK

A linear algorithm for colouring planar graphs with at most five colours has recently been published. However, this algorithm, which operates by recursive reduction of the graph, is unnecessarily complicated. An alternative method which is much simpler is presented in this paper.


* Department of Computer Science, Heriot-Watt University, 79 Grassmarket, Edinburgh EH1 2HJ


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