1. Math in the Time of Plague

   • Barry Mazur

   Viewpoint 22 September 2020 Pages: 1 - 6

   

2. Framed Knots

   • Mohamed Elhamdadi
   • Mustafa Hajij
   • Kyle Istvan

   Article 04 August 2020 Pages: 7 - 22

   

3. A Hidden Orthogonal Latin Square in a Work of Euler from 1770

   • Nicola Oswald
   • Jörn Steuding

   Years Ago 06 January 2020 Pages: 23 - 29

   

4. The Lake Wobegon Paradox

   • C. Bryan Dawson

   Article 08 June 2020 Pages: 30 - 32

   

5. Algebrexit

   • Colin Adams

   Mathematically Bent 06 May 2020 Pages: 33 - 35

6. A Bug’s Identity

   • Davide Francesco Redaelli
   • Francesco Viganò

   Note 05 August 2020 Pages: 36 - 37

   

7. Polygon Offsetting with Squares Erected on Its Sides

   • Alexander Belyaev
   • Pierre-Alain Fayolle

   Mathematical Gems and Curiosities Open access 23 July 2020 Pages: 38 - 41

   

8. Dedekind-like

   • Manya Sundström (text)
   • Mattias Marklund (photo)

   Poem Open access 29 October 2020 Pages: 42 - 43

   

9. An Alternative Proof of Euler’s Rotation Theorem

   • Toby Joseph

   Article 03 August 2020 Pages: 44 - 49

   

10. The Development of Mathematical Research in Vietnam at a Glance

    • Lê Tuấn Hoa

    Mathematical Communities 06 August 2020 Pages: 50 - 58

    

11. Poincaré Tries to Explain His Discovery of the Fuchsian Groups

    • Kathryn Weld

    Poem 13 October 2020 Pages: 59 - 59

12. Karl Weierstraß: A Westphalian Mathematician

    • Karl-Goswin Große Erdmann

    The Mathematical Tourist 04 November 2020 Pages: 60 - 63

    

13. Math for Grades 1 to 5 Should Be Art

    • Jim Henle

    For our Mathematical Pleasure 07 May 2020 Pages: 64 - 69

    

14. Anniversary of Notation for Number π

    • Isaac Elishakoff

    Letter 20 October 2020 Pages: 70 - 70

15. A Winning Strategy for Hold That Line

    • Jindřich Michalik

    OriginalPaper 02 July 2020 Pages: 71 - 77

    

16. 99 Variations on a Proof by Philip Ording

    • John J. Watkins

    Book Review 13 August 2020 Pages: 79 - 81

17. Exercises in (Mathematical) Style: Stories of Binomial Coefficients by John McCleary

    • John J. Watkins

    Book Review 13 August 2020 Pages: 82 - 83

18. Dirichlet: A Mathematical Biography by Uta C. Merzbach

    • Robin Wilson

    Book Review 11 September 2020 Pages: 84 - 86

19. Board Games: Throughout the History and Multidimensional Spaces by Jorma Kyppö

    • Albrecht Heeffer

    Book Review 31 July 2020 Pages: 87 - 88

20. Tales of Impossibility by David Richeson

    • Andrew J. Simoson

    Book Review 14 August 2020 Pages: 89 - 91

    

21. Computing: The 1940s and 1950s

    • Robin Wilson
    • Martin Campbell-Kelly

    Stamp Corner 09 October 2020 Pages: 92 - 92