# Hall of lame

And the wooden spoon goes to… us. Again.

We spend a lot of time trying to make each issue of Chalkdust perfect. But we wouldn’t be human if we didn’t make the odd error. Here’s our pick of the cock ups.

Do you have any more errata? Get in touch @chalkdustmag.

## Issue 01

A rare spot as it was fixed in the second printing of our first issue, a mix up of Einstein’s famous equations in an otherwise (inter)stellar article:

A tale of two Einstein equations: that $c^2$ should be $c^4$.

## Issue 02

A howler on the cover: did you see this?

How has the white of the ‘k’ appeared above the grey?

Did you have a go at our Issue 02 crossnumber? It’s still available to play, and we’ve fixed this little mistake:

Crossnumber enthusiasts might have noticed that 4 Down doesn’t actually quite work

One of our favourite functions was the Weierstrass function: continuous everywhere but differentiable nowhere (basically very spiky). But did you spot that there’s a typo in the definition?

That should be $ab > 1+\frac{3}{2}\pi$.

## Issue 03

Welcome to Issue 03! Here’s a lovely pixelly picture of our interviewee, Ian Stewart.

Lovely pixelly Ian Stewart. Stay away from PNG files!

You might have been distracted by this extraneous space in our Page 3 model:

‘that’, space, comma?!

## Issue 04

In our article on the Buckingham pi theorem, we made this explosive error:

John von Nuemann, you say? Any relation to John von Neumann?

## Issue 05

Our history column, Roots, is written by the brilliant Emma Bell. But let’s hope you don’t need to get in touch with her!

Not technically the right email address, emmalbell@outlook.com

That $b$ and $-b$? Should $b$ the other way round

Next issue, Top 10 basic geometric errors:

Fans of primary school maths will know that the radius is half the diameter, not the circumference

• ### What’s your least favourite number?

Read about our least favourite numbers in this collection from issue 5!
• ### Issue 05

New issue out now! Graphical linear algebra, slide rules and game theory in nature. Plus all your favourite fun pages.
• ### Prize crossnumber, Issue 05

Win £100 of Maths Gear goodies by solving our famously fiendish crossnumber
• ### What’s hot and what’s not, Issue 05

Mathematical fashion advice for an ever-changing world
• ### Dear Dirichlet, Issue 05

Prof. Dirichlet tackles political arguments and werewolves in answering your personal problems
• ### Puzzles, Issue 05

Solve the puzzles that appeared in Issue 05.