Volume 48 - Issue 2 - January 2016

Mathematical Spectrum Click image to download issue

From the Editor
   p. 49

A Serendipitous Encounter with a Bessel Function
   Martin Griffiths
   pp. 50-53

A Gibonacci Puzzle with Dividends
   Thomas Koshy
   pp. 54-57

Constructing a Right-Angled Triangle from its
   Hypotenuse and Inradius
   Michel Bataille
   pp. 58-61

The Hypergeometric Distribution: an Application
   from Poker
   John C. B. Cooper
   pp. 62-64

Compatible Group Operations
   Louis Rubin
   pp. 65-66

Lyness Cycles and their Invariant Curves
   Jonny Griffiths, Martin Griffiths
   pp. 67-72

Can a Tromino be Tiled with Unit Trominoes
   C. Rebecca Thomas, Siân K. Jones, Stephanie Perkins
   pp. 78-81

Exploring The Curiously Fascinating Integer Sequence
   1, 12, 123, 1234, 12345, 123456, 1234567, 12345678,
   123456789, 1234567891, 12345678912, 123456789123 ...
   Jay L. Schiffman
   pp. 82-87

Letter to the editor: A Fibonacci curiosity
   Nick Lord
   pp. 87-88

Letter to the editor: Apollonius' theorem and
   Pythagorean triples
   Jim Dickson
   pp. 88-89

Letter to the editor: The inequality 9/4 > sin2A + sin2B + sin2C > 2
   for acute-angled triangles
   Spiros P. Andriopoulos
   pp. 89-90

Letter to the editor: Dividing by x2 - x - 1
   Abbas Rouhol Amini
   p. 91

Letter to the editor: Euler's infinite product generates series
   Spiros P. Andriopoulos
   pp. 92-93

Problems and Solutions
   pp. 93-96

Book review: The Proof and the Pudding: What Mathematicians,
   Cooks, and You Have in Common by J. Henle
   (Princeton University Press, 2015)
   Sarah Browne
   p. 96