1. Banach’s Doctorate: A Case of Mistaken Identity

   • Danuta Ciesielska
   • Krzysztof Ciesielski

   Article Open access 22 January 2021 Pages: 1 - 7

   

2. Variations on the Tait–Kneser Theorem

   • Gil Bor
   • Connor Jackman
   • Serge Tabachnikov

   Mathematical Gems and Curiosities 04 August 2021 Pages: 8 - 14

   

3. A Planar Cubic Derived from the Logarithm of the Dedekind \(\eta \)-Function

   • C. A. Lütken

   Article Open access 22 July 2021 Pages: 15 - 26

   

4. A Denial

   • Colin Adams

   Mathematically Bent 03 January 2021 Pages: 27 - 28

5. Proof Without Words: From Floor to Stairs

   • Julije Jakšetić

   Article 30 July 2021 Pages: 29 - 29

   

6. A Q&A with a Very Young Popular Math and Science Author

   • Joseph Mazur
   • Hamza Emad Alsamraee

   Mathematical Communities 25 January 2021 Pages: 30 - 34

   

7. On Nondeductive Mathematics

   • Zvonimir Šikić

   Viewpoint 17 September 2020 Pages: 35 - 39

8. Cutting Cakes and Kissing Circles

   • Alexander Müller-Hermes

   Article 17 June 2021 Pages: 40 - 44

   

9. The Traditional Academy of Mathematics at the Fenglong Mountain of China

   • Pengfei Liu

   The Mathematical Tourist 30 July 2021 Pages: 45 - 49

   

10. A Figure with Heesch Number 6: Pushing a Two-Decade-Old Boundary

    • Bojan Bašić

    Note 18 January 2021 Pages: 50 - 53

    

11. A History of Gaps

    • Bogdan Suceavă

    Poem or Fiction 09 March 2021 Pages: 54 - 59

    

12. A Competent Translation/A Pitiful Bungle: The Foundations of Geometry

    • Jemma Lorenat

    Years Ago 18 October 2019 Pages: 60 - 70

    

13. A Square Root’s Take on the Pandemic

    • Tom Blackford

    Poem or Fiction 07 July 2021 Pages: 71 - 72

14. Mathematics That Dances

    • Jim Henle

    For Our Mathematical Pleasure 15 June 2021 Pages: 73 - 79

    

15. Mathematics Disputes with Death, and the Devil Intervenes

    • Thomas Reed Willemain

    Poem or Fiction 12 July 2021 Pages: 80 - 81

16. In The Shadow of Euler’s Greatness: Adventures in the Rediscovery of an Intriguing Sum

    • Seán M. Stewart

    Article 29 July 2021 Pages: 82 - 91

17. Mathematics for Human Flourishing by Francis Su, with reflections by Christopher Jackson

    • Pamela Gorkin

    Book Review 21 September 2020 Pages: 93 - 94

18. The Eighth Detective (Eight Detectives) by Alex Pavesi

    • Mary W. Gray

    Book Review 25 February 2021 Pages: 95 - 96

19. 100 Years of Math Milestones: The Pi Mu Epsilon Centennial Collection by Stephan Garcia and Steven Miller

    • Andrew Simoson

    OriginalPaper 23 March 2021 Pages: 97 - 98

20. Leonhard Euler’s Letters to a German Princess: A Milestone in the History of Physics Textbooks and More

    • Johan C.-E. Stén

    Book Review Open access 10 June 2021 Pages: 99 - 102

21. Thin Objects: An Abstractionist Account by Øystein Linnebo

    • Inger Bakken Pedersen

    Book Review Open access 31 March 2021 Pages: 103 - 106

22. Correction to: John Conway: The Man Who Played Mathematics

    • Dierk Schleicher

    Correction 02 August 2021 Pages: 107 - 107

23. Mathematics in Art

    • Robin Wilson

    Stamp Corner 03 March 2021 Pages: 108 - 108