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100.20 Outside the box

Published online by Cambridge University Press:  14 June 2016

Jim Simons
Jim Simons*
Affiliation:
Foxcote, Noverton Lane, Prestbury, Cheltenham GL52 5BB e-mail: jimsimonsfoxcote@googlemail.com

Abstract

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Information

Type
Notes
Information
The Mathematical Gazette , Volume 100 , Issue 548 , July 2016, pp. 323 - 329
Copyright
Copyright © Mathematical Association 2016 

References

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3.O'Connor, J. J. and Robertson, E. F., Pell's equation, available at http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Pell.htmlGoogle Scholar
4.Hardy, G. H. and Wright, E. M., An introduction to the theory of numbers (4th edn.), Oxford University Press (1960).Google Scholar
5.Jahnel, J.. When is the (co)sine of a rational angle equal to a rational number?, available at http://www.uni-math.gwdg.de/jahnel/Preprints/cos.pdfGoogle Scholar