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# What’s hot and what’s not, Issue 01

Be the envy of your friends with our guide to what’s hot in maths right now

“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.

Pi approximation day

Because everyone knows that 22/7 is a better approximation to π than 3.14.

Pi day

The American date format is totally illogical. Plus, pi day is too mainstream now.

Stop smiling, Fibonacci, you are so boring. And Fibonacci isn’t even your name, for crying out loud.

Iccanobif numbers

$x_0=1$, $x_1=1$, $x_{n+1}=\operatorname{reverse}(x_n)+\operatorname{reverse}(x_{n-1})$.  I’ll let you work out its amazing properties for yourself.

Fibonnaci numbers

Rabbits, golden ratio, spirals, sunflowers, blah blah blah. We’ve heard it all before!

• ### 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.