Maths cool enough for graffiti

e, i, pi
On a building near Národní divadlo.

When I woke up today, I certainly did not expect to see this. Whether a product of a moment of inspiration or careful planning, it certainly brightened my day – it’s the little things that make you smile (and things like getting all mushy over an equation that get you thinking how far you’ve already gone :-) ).

Say your words