Volume 25 - Issue 1 - September 1992

Mathematical Spectrum Click image to download issue

Carmichael numbers
   Keith Devlin
   pp. 1-2

On a problem of Thwaites
   R. H. Eddy
   pp. 3-7

Bernoulli numbers
   Joseph McLean
   pp. 810

Cyclic quadrilaterals
   J. H. Littlewood
   pp. 1011

APR made difficult
   Alan Fearnehough
   pp. 12-15

Figured tours
   George Jelliss
   pp. 16-20

Do you say ar or arc?
   Paul Belcher
   pp. 20-21

The effect of dissipation on flight times
   P. Glaister
   pp. 22-24

Computer column
   Mike Piff
   p. 25

Letter to the Editor: Factorising polynomial pairs
   K. R. S. Sastry
   p. 26

Letter to the Editor: The Ramanujan problem
   David Singmaster
   p. 26

Problems and Solutions
   pp. 27-28

Book review: The Man Who Knew Infinity-A Life of the  
   Genius Ramanujan by R. Kanigel (Scribners, 1991)
   David Sharpe
   p. 29

Book review: Guide to Mathematical Methods
   by J. Gilbert (Macmillan Education Ltd, 1991)
   Oliver Johnson
   pp. 29-30

Book review: Statistics: Mathematica in Action
   by S. Wagon (W. H. Freeman, 1991)
   p. 30

Book review: Programming in Mathematica by R. E. Maeder
   (Addison-Wesley, 1991)
   Roger Cook
   p. 30

Book review: Discrete Mathematics: An Introduction for
   Software Engineers by M. Piff (Cambridge University Press, 1991)
   John Catlow
   p. 31

Book review: Programs in BBC Basic for Young Mathematicians
   by S. G. Brewer (Edinburgh University Press, 1991)
   Roger Fletcher
   pp. 31-32

Other books received:
   Order Stars by A. Iserles, S. P. NØrsett 
   (Chapman and Hall, 1991)
   Rings, Fields and Groups: An Introduction to Abstract Algebra 
   by R. B. J. T. Allenby (Edward Arnold, 1991) 
   Management Mathematics: A User-friendly Approach 
   by P. Sprent (Penguin Books, 1991) 
   A First Course in Business Mathematics and Statistics  
   by R. N. Rowe (DP Publications, 1991) 
   Calculator Puzzles, Tricks and Games by N. Pallas 
   (Dover Publications, 1991) 
   Statistical Methods for Business and Economics, fourth edition  
   by D. L. Harnett, A. K. Soni (Addison-Wesley, 1991)  
   Introductory Statistics, third edition
   by N. A. Weiss, M. J. Hassett (Adison-Wesley, 1991)
   p. 32