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The seven-colour map

Published online by Cambridge University Press:  03 November 2016

Roger F. Wheeler
Roger F. Wheeler*
Affiliation:
Mathematics Department, The University, Leicester LE1 7RH
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Abstract

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Type
Classroom Notes
Information
The Mathematical Gazette , Volume 58 , Issue 403 , March 1974 , pp. 47 - 49
Copyright
Copyright © Mathematical Association 1974

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References

Page No 47 note † A good method is described in Cundy and Rollett’s Mathematical models (2nd edition, Oxford, 1961), p. 168. This can, however, be simplified by dividing the ‘waist’ of the torus into two parts instead of three and letting the ‘helical’ curve return to its starting point after only two circuits: the rest of the construction is the same. With this method, which corresponds to Fig. 1 above, the hexagons are less elongated.

Page No 47 note ‡ Ibid. p. 144.