1. Letter to the Editor

   • Siobhan Roberts

   Letter to the Editors 21 July 2011 Pages: 79 - 79

2. Cantor-Bernstein’s Theorem in a Semiring

   • Marcel Crabbé

   Note 23 August 2011 Pages: 80 - 80

3. A Simple Proof that ζ(2) = \(\frac{\pi^{2}}{6}\)

   • Michael D. Hirschhorn

   Note 13 July 2011 Pages: 81 - 82

4. Mathematica

   • Laura Eleanor Holloway

   Poem 21 June 2011 Pages: 83 - 83

5. The Whirling Kites of Isfahan: Geometric Variations on a Theme

   • Peter R. Cromwell
   • Elisabetta Beltrami

   Article 21 June 2011 Pages: 84 - 93

6. Meissner’s Mysterious Bodies

   • Bernd Kawohl
   • Christof Weber

   Article 30 July 2011 Pages: 94 - 101

7. Creating Clueless Puzzles

   • Gerard Butters
   • Frederick Henle
   • Colleen McGaughey

   Mathematical Entertainments 01 April 2011 Pages: 102 - 105

8. Statistical Lament (after Joni Mitchell)

   • Robert J. MacG. Dawson

   Poem 03 June 2011 Pages: 106 - 106

9. The Book

   • Colin Adams

   Mathematically Bent 03 March 2011 Pages: 107 - 109

10. Oscillatory Sums

    • Volker Betz
    • Vassili Gelfreich
    • Florian Theil

    Article 21 June 2011 Pages: 110 - 114

11. Geometry Where Direction Matters—Or Does It?

    • Horst Martini
    • Margarita Spirova
    • Konrad J. Swanepoel

    Article 14 July 2011 Pages: 115 - 125

12. Gustav Theodor Fechner: Pioneer of the Fourth Dimension

    • Hans G. Fellner
    • William F. Lindgren

    Years Ago 13 July 2011 Pages: 126 - 137

13. Paul Cohen and Forcing in 1963

    • Reuben Hersh

    Article 21 July 2011 Pages: 138 - 140

14. James Stirling: Mathematician and Mine Manager

    • Pieter Maritz

    The Mathematical Tourist 03 March 2011 Pages: 141 - 147

15. Le dossier Pythagore. Du chamanisme à la mécanique quantique by Pierre Brémaud

    • Takis Konstantopoulos

    Reviews 13 July 2011 Pages: 148 - 150

16. The Music of Pythagoras: How an Ancient Brotherhood Cracked the Code of the Universe and Lit the Path from Antiquity to Outer Space by Kitty Ferguson

    • Meredith Clement
    • Luv Grummer
    • John Barthell

    Reviews 08 July 2011 Pages: 151 - 152

17. Pythagoras: His Life, Teaching, and Influence by Christoph Riedweg, translated by Steven Rendall

    • Meredith Clement
    • Luv Grummer
    • John Barthell

    Reviews 08 July 2011 Pages: 153 - 154

18. Mitt Liv som Pythagoras (“My Life as Pythagoras,” a novel published in Swedish) by Fredrik Lång

    • Johan Sten

    Reviews 12 May 2011 Pages: 155 - 156

19. Complex Dynamics: Families and Friends by Dierk Schleicher (ed.)

    • Mary Rees

    Reviews 13 July 2011 Pages: 157 - 159

20. Fatou, Julia, Montel, The Great Prize of Mathematical Sciences of 1918, and Beyond by Michèle Audin

    • Jean-Pierre Kahane

    Reviews 14 July 2011 Pages: 160 - 162

21. Esthétique et Mathématiques: Une Exploration Goodmanienne by Caroline Jullien

    • Nathalie Sinclair
    • David Pimm

    Reviews 21 June 2011 Pages: 163 - 165

22. Recent Mathematical Stamps: 2007–2008

    • Robin Wilson

    Stamp Corner 21 June 2011 Pages: 166 - 166