Volume 43 - Issue 3 - May 2011

Mathematical Spectrum Click image to download issue

From the Editor
   p. 97

Summing the Reciprocals of Particular Types of Integers
   Marttin Griffiths
   pp. 98-103

Complex Iteration and Roots of Unity
   Camilla Jordan, David Jordan
   pp. 104-109

Dual Rectangles
   Graham Everest, Jonny Griffiths
   pp. 110-114

Perfect Numbers
   Sandra Pulver
   pp. 115-119

Divisibility and Periodicity in the Fibonacci Sequence
   Jay L. Schiffman
   pp. 120-124

Fibonacci, Lucas, and Pell Numbers, and Pascal's Triangle
   Thomas Koshy
   pp. 125-132

Letter to the Editor: Amicable chains and half-amicable pairs
   Abbas Rouholamini Gugheri
   p. 133

Letter to the Editor: Message in a bottle
   Nick Lord
   pp. 133-134

Letter to the Editor: First 100 numbers
   Bob Bertuello
   p. 134

Letter to the Editor: Primes with a pattern
   Bablu Chandra Dey
   p. 135

Problems and Solutions
   pp. 135-140

Book review: Alex's Adventures in Numberland by A. Bellos
   (Bloomsbury, 2010)
   Derek Collins
   pp. 140-143

Other books received:
   Calculus Deconstructed: A Second Course in First-Year Calculus
   by Z. H. Nitecki (The Mathematical Association of America, 2009) 
   Applied Data Mining for Business and Industry by P. Giudici, S. Figini
   (John Wiley, 2009)   
   p. 143