1. Counting Parallel Segments: New Variants of Pick’s Area Theorem

   • Alexander Belyaev
   • Pierre-Alain Fayolle

   Article Open access 08 August 2019 Pages: 1 - 7

   

2. Cooking with Mathematicians

   • Demian Nahuel Goos Bosco

   Poem or Fiction 06 August 2019 Pages: 8 - 9

   

3. On Generalizing a Corollary of Fermat’s Little Theorem

   • Gove Effinger

   Article 12 August 2019 Pages: 10 - 12

   

4. Popov, Berg, Sokolov: A Street with Three Plaques

   • Bismark Singh

   The Mathematical Tourist 23 October 2019 Pages: 13 - 15

   

5. The Blind Locksmith

   • Terry Trowbridge

   Poem 27 March 2019 Pages: 16 - 16

6. Ruler and Compass Constructions of the Equilateral Triangle and Pentagon in the Lemniscate Curve

   • M. A. Gómez-Molleda
   • Joan-C. Lario

   Article 25 April 2019 Pages: 17 - 21

   

7. Numeralogy

   • Jim Henle

   For Our Mathematical Pleasure 01 July 2019 Pages: 22 - 27

   

8. N of 1

   • Michael J. Leach

   Poem 11 March 2019 Pages: 28 - 28

9. A Relationship between the Tractrix and Logarithmic Curves with Mechanical Applications

   • Davide Crippa
   • Pietro Milici

   Article 10 May 2019 Pages: 29 - 34

   

10. GUI

    • Colin Adams

    Mathematically Bent 29 May 2019 Pages: 35 - 36

11. In Search of Shadows: The First Topological Conference, Moscow 1935

    • Darya E. Apushkinskaya
    • Alexander I. Nazarov
    • Galina I. Sinkevich

    Article 09 July 2019 Pages: 37 - 42

    

12. I Had to Call In a Mathematician

    • Erik Talvila

    Fiction 25 June 2019 Pages: 43 - 43

13. Contraband Mathematics: A Documentary Review of the Resources Available to George Green at the Nottingham Subscription Library 1823–1828

    • Rachel Harding
    • Michael Harding

    Article Open access 18 March 2019 Pages: 44 - 55

    

14. Kasner Meets Poncelet

    • Serge Tabachnikov

    Mathematical Gems and Curiosities 07 May 2019 Pages: 56 - 59

    

15. Vertical

    • Lawrence M. Lesser

    Poem 05 April 2019 Pages: 60 - 60

16. Thomas Harriot: A Life in Science by Robyn Arianrhod

    • Joseph Mazur

    Book Review 15 July 2019 Pages: 62 - 65

    

17. Mathematics + Art: A Cultural History by Lynn Gamwell

    • Pedro Freitas
    • Simão Palmeirim

    Book Review 27 June 2019 Pages: 66 - 68

18. Harmonies of Disorder—Norbert Wiener: A Mathematician–Philosopher of Our Time by Leone Montagnini

    • Eisso J. Atzema

    Book Reviews 27 June 2019 Pages: 69 - 70

19. How to Fall Slower Than Gravity by Paul J. Nahin

    • Andrew Simoson

    Book Review 05 April 2019 Pages: 71 - 72

20. The Life and Works of John Napier by Brian Rice, Enrique González-Velasco, and Alexander Corrigan (eds.)

    • Osmo Pekonen

    Book Review Open access 16 August 2019 Pages: 73 - 74

21. Indivisible

    • Adam Simon Levine

    Puzzle 08 August 2019 Pages: 75 - 75

22. Quantum theory

    • Robin Wilson

    Stamp Corner 15 July 2019 Pages: 76 - 76