MIC in Bolzano
One of the ten signposts of the MIC project "Maths in the city".
This one is placed near palazzo Widmann and it remarks that the spirals decorating it have a shape like this one, different from this other one, which is the shape typically met in the shells.
You can see another one of the ten signposts.
© matematita
The image belongs to the sections...:
Curves and lines (2D geometry)
The maths signposts in the streets (Exhibitions with matematita)
Further information:
http://www.matematicaincitta.bz.it/