These puzzles appeared in Issue 01 of the magazine.

These puzzles appeared in Issue 01 of the magazine.
Run? Kill? Ask nicely? (Source: flickr.com/joelf)
Every issue we feature another great model on page 3 of our magazine. This issue it’s this:
\begin{align*}
S’ &= \Pi – \beta S Z – \delta S,\\
Z’ &= \beta S Z + \zeta R – \alpha S Z ,\\
R’ &= \delta S + \alpha S Z – \zeta R.
\end{align*} Continue reading
Moonlighting agony uncle Professor Dirichlet answers your personal problems. Want the Prof’s help? Send your problems to deardirichlet@chalkdustmagazine.com.
This week’s problem sheet asks me to show that $\log(x) < x-1$ for all $x > 0$. To me this seems obviously true – a quick sketch backs it up as well. I think I’m supposed to use Taylor series or something but I’m not sure where to start. Can you help?
“A blackboard, for a mathematician, is an unrivalled way to communicate” – Cédric Villani, Fields Medallist 2010
▲ Blackboards
The mathematical equivalent of a Little Black Dress. Blackboards will never go out of style.
▼ E-learning systems
In the immortal words of the Black Eyed Peas, interactive whiteboards are so two thousand and late.
This issue, Top Ten features the best haircuts held by mathematicians!
10. Rumour has it that judges’ wigs were inspired by Leonhard Euler’s hair.
9. Peter Dirichlet loves answering your letters and caring for his hair.
Our original £100 prize crossnumber is featured on pages 34 and 35 of Issue 01.
These solutions relate to puzzles found in Issue 01 of the magazine.