Issue 13 was released on 1 May 2021. Enjoy the articles online or scroll down to view the magazine as a PDF.
To celebrate the launch of Issue 13, we encouraged readers to make some art inspired by cellular automata. Read more here.
In conversation with Ulrike TillmannSophie Maclean and David Sheard speak to a very top(olog)ical mathematician!
On conditional probability: Cards, Covid, and Crazy Rich AsiansMadeleine Hall explores the sometimes counterintuitive consequences of conditional probability to our everyday lives.
The maths of MafiaSophie explores the fascinating mathematics behind the games Mafia and Among Us.
Who is the best England manager?Paddy Moore levels the score
How to be the least popular American presidentFrancisco Berkemeier takes a look at the mathematics behind elections, and the Electoral College, in the United States of America.
On the cover: cellular automataDiscover the meaning of the coloured squares on the cover of issue 13
Significant figures: John ConwayThe story of an unforgettable mathematician.
Surfing on waveletsJohannes Huber explores the maths behind how image compression works.
Diagrammatic algebra: On the road to category theoryAryan Ghobadi gives a maths lecture at a zoo
The big argument: Is the Einstein summation convention worth it?We hear arguments for and against this controversial convention
Top ten vote issue 13Have your say
What’s hot and what’s not, Issue 13Fashion is fleeting, Chalkdust regulars are not.
Which number system are you?Are you binary? Roman numerals? The decimals? Find out by answering a maximum of ∞ easy questions
Dear Dirichlet, Issue 13Parishoners, partners and puzzled playwrights have written in to the professor's postbox this issue
Prize crossnumber, Issue 13£100 of Maths Gear goodies to be won if you can solve it
Page 3 model: CowsHow big is the biggest cow?
Top Ten: Calculator buttonsThe definitive chart of the best buttons
Cryptic crossnumber (including hints)Looking for a challenge? Try our cryptic crossnumber—with hints and tips so anyone can have a go!
More from Chalkdust
Escape From Model LandWe review the eighth (and last) of this year’s nominees for the Book of the Year
Congruent TrianglesWe review the seventh of this year’s nominees for the Book of the Year
Beyond MeasureWe review the sixth of this year’s nominees for the Book of the Year
The Irrational Diary of Clara ValentineWe review the fifth of this year’s nominees for the Book of the Year
Math Games with Bad DrawingsWe review the fourth of this year’s nominees for the Book of the Year
Peculiar Deaths of Famous MathematiciansWe review the third of this year’s nominees for the Book of the Year