Volume 26 - Issue 1 - September 1993

Mathematical Spectrum Click image to download issue

Primorial, factorial and multifactorial primes
   Chris Caldwell, H. Dubner
   pp. 1-7

Expansions into iterated square roots
   Alexander Abian, Sergei Sverchkov
   pp. 8-10

Apocalypse numbers
   Clifford A. Pickover
   pp. 1011

One shape in several guises
   L. Short
   pp. 1221

Computer column
   Mike Piff
   p. 22

Letter to the Editor: On two diophantine equations
   K. R. S. Sastry
   pp. 23-24

Letter to the Editor: On fast convergence to π
   T. R. Scavo
   pp. 24-26

Letter to the Editor: From stamps to Diophantine equations
   Steven Vajda
   p. 27

Problems and Solutions
   pp. 27-29

Book review: Visions of Symmetry: Notebooks, Periodic Drawings
   and Related Works of M. C. Escher by D. Schattschneider 
   (W. H. Freeman and Company, 1992)
   David Brackin
   p. 30

Book review: Another Fine Math You've Got Me Into
   by I. Stewart (W. H. Freeman, 1992)
   Khalid Khan
   pp. 30-31

Book review: Statistics: Slices of Mathematical Pie
   Compiled by B. Atkin (The Mathematical Association, 1991)
   D. W. Sharpe
   p. 31

Book review: The Road to Infinity by S. A. Knight
   (Book Guild, 1992)
   Roger Webster
   pp. 31-32

Other books received:
   The Moscow Puzzles: 359 Mathematical Recreations
   by B. A. Kordemsky (Dover, 1992)
   Optimization Algorithms for Networks and Graphs 
   by J. R. Evans, E. Minieka (Marcel Dekker, 1992) 
   Geometry: Axiomatic Developments and Problem Solving
   by E. Perry (Marcel Dekker, 1992) 
   Mathematics and Logic by M. Kac, S. M. Ulam (Dover, 1992)  
   Abstract Algebra and Solutions by Radicals by J. E. Maxfield, 
   M. W. Maxfield (Dover, 1992)
   p. 32