1. Computer Geometry: Rep-Tiles with a Hole

   • Christoph Bandt
   • Dmitry Mekhontsev

   Article 28 August 2019 Pages: 1 - 5

   

2. Can the Elliptic Billiard Still Surprise Us?

   • Dan Reznik
   • Ronaldo Garcia
   • Jair Koiller

   Mathematical Gems and Curiosities 12 December 2019 Pages: 6 - 17

   

3. Rectification of Circular Arcs by Linkages

   • Robert Dawson
   • Pietro Milici

   Article 08 July 2019 Pages: 18 - 23

   

4. Mathematical Sightings at the Museum of Tomorrow

   • Ma. Louise Antonette De Las Peñas

   The Mathematical Tourist 18 February 2020 Pages: 24 - 28

   

5. The Day I Receive My Ph.D.

   • Arkaye Kierulf

   Poem 09 April 2019 Pages: 29 - 29

6. Digital Images Unveil Geometric Structures in Pairs of Relatively Prime Numbers

   • Benjamín A. Itzá-Ortiz
   • Roberto López-Hernández
   • Pedro Miramontes

   Article 31 July 2019 Pages: 30 - 35

   

7. A Flowering of Mathematical Art

   • Jim Henle
   • Craig Kasper

   For Our Mathematical Pleasure 07 November 2019 Pages: 36 - 40

   

8. Remembering e

   • Robert J. MacG. Dawson

   Poem 01 October 2019 Pages: 41 - 41

9. Odd Perfect Numbers: A Triptych

   • William Dunham

   Article 22 August 2019 Pages: 42 - 46

   

10. Prime Suspect

    • Colin Adams

    Mathematically Bent 02 August 2019 Pages: 47 - 48

11. More on Croatian and Zagreb Mathematics

    • Darko Veljan

    Mathematical Communities 11 September 2019 Pages: 49 - 54

    

12. Covering a Triangular Number with Pentagonal Numbers

    • Günhan Caglayan

    Note 16 December 2019 Pages: 55 - 55

    

13. “Actual Accomplishments in This World”: The Other Students of Charlotte Angas Scott

    • Jemma Lorenat

    Years Ago 04 March 2019 Pages: 56 - 65

14. The Role of History in the Study of Mathematics

    • Harold M. Edwards

    Viewpoint 15 November 2019 Pages: 66 - 69

15. The Scottish Book. Mathematics from the Scottish Café, with Selected Problems from the New Scottish Book, second edition Edited by R. Daniel Mauldin

    • Serge Tabachnikov

    Book Review 11 September 2019 Pages: 71 - 74

    

16. Giovanni Battista Guccia: Pioneer of International Cooperation in Mathematics by Benedetto Bongiorno and Guillermo P. Curbera

    • Rossana Tazzioli

    Book Review 10 October 2019 Pages: 75 - 81

    

17. The Perfect Bet by Adam Kucharski

    • Marco Alberto Javarone

    Book Review Open access 21 August 2019 Pages: 82 - 83

18. Mathematical Understanding of Nature: Essays on Physical Phenomena and Their Understanding by Mathematicians by V. I. Arnold, translated by Alexei Sossinsky and Olga Sipacheva

    • Mark Levi

    Book Review 10 October 2019 Pages: 84 - 86

    

19. Mathematical Constants, Mathematical Constants II

    • Osmo Pekonen

    Book Review Open access 09 September 2019 Pages: 87 - 88

20. Restaurant Review

    • Jane P. Sheldon

    Article 03 September 2019 Pages: 89 - 89

21. The Early 20th Century

    • Robin Wilson

    Stamp Corner 04 November 2019 Pages: 90 - 90