Join us in welcoming Issue 18 to the world! Enjoy the articles online or scroll down to view the magazine as a PDF.
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Features
In conversation with Kat Phillips
Bethany Clarke and Ellen Jolley talk research, raids, and rugby with the Twitch streamer
The ninth Dedekind number
Madeleine Hall is a Dedekind-ed follower of fashion
On the cover: flexahedron
Connie Bambridge-Sutton invites you to make a flexible 3D shape
I’m counting on it
Joe Celko looks at four different abacuses used throughout history
The maths before the scalpal
Leszek Wierzchleyski investigates how mathematicians can help surgeons
Who needs differentiation?
Paddy MacMahon calculates tangents and turning points without calculus
How much hair?
Thomas Sperling discusses some furry Fermi problems
A day in the life: engineering
We talk to three engineers working in different jobs across industry and academia
The Josephus problem
Alvin Choy works out who will be the last one left in
The magic of particle prediction
Madi Hammond shows us how physicists are predicting the fundamental particles of the universe.
The Newton–Raphson fractal
James Christian and George Jensen zoom in, out, in, out, and tell us what it's really all about
What’s odd about Pascal’s triangle?
Graeme Foster asks if there are more odd or even numbers in the triangle
Fun
Prize crossnumber, Issue 18
Can you solve it?
News, Issue 18
Today's weather: seasonal, highs of π/18.
Which integral are you?
And more importantly, are you on the A-level formula sheet?
Cryptic crossword, Issue 18
Can you solve it?
The zero knowledge proof
Chalkdust HQ has been infiltrated by a secret non-mathematician
Top Ten: Mathematical games
The undisputed chart of the best mathematical games this seasonOrbit crossnumber
Can you solve it?
Dear Dirichlet, Issue 18
Phone assistants, duplicating pastries, and being a 10 anywhere else are among the topics of discussion in this issue's Dear Dirichlet advice column
What’s hot and what’s not, Issue 18
Fashion is fleeting, Chalkdust regulars are not.
Mathematical symbols alignment chart
Looking for a new character? Why not pick one of these?
The big argument: Are there more fruit or doors?
Fruit... it's obviously fruit.
Printed versions
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