A simple way to understand why there are only five regular polyhedra is to examine how reg...
A construction of 8 cubes that can't be the net of a hypercube in the 3-dimensional space....
If an inhabitant of Flatland (the famous novel of Abbott) would see a sphere passing throu...
An inhabitant of Flatland can escape from a closed yard by jumping up and using the third ...
The net of the 120-cell (one of the six regular polytopes in the four-dimensional space), ...
This poster of the exhibition Un tuffo nella quarta dimensione - Diving in the 4th dimensi...
One of the four posters of presentation of the exhibition Un tuffo nella quarta dimension...
One of the four posters of presentation of the exhibition Un tuffo nella quarta dimension...
One of the four posters of presentation of the exhibition Un tuffo nella quarta dimension...
One of the four posters of presentation of the exhibition Un tuffo nella quarta dimension...
