There are
people in this world who do not know polyhedra yet.

But, on the
other hand, there are people who someday know polyhedral and after this moment
they will never let them go…

At the end of
the XVI century, the astronomer and physicist Johannes Kepler believed that God
had created a mystic and perfect universe. In this geometric universe, the
orbits of the planets were inside of spheres where the 5 platonic solids (icosahedron,
octahedron, dodecahedron, tetrahedron and cube) were inscribed. Unfortunately
for him, after years of analysis of the Tycho Brahe’s data, he concluded that
the orbits of the planet were ellipses.

Nevertheless,
in that epoch, the study and undertanding of the polyhedra was the obsession of
many artists and scientists as the Italians Leonardo DaVinci and Luca Paccioli
and the Germans Wenzel Jamnitzer and Lorenz Stöer, for example.

Mathematicians
as Poinsot, Cauchy, Catalan, Bertrand, Poincaré, Schläfli and Schlegel, among
others did considerable research to the study of polyhedra. However it is the
British-Canadian mathematician Harold Coxeter who dedicated all his life to the
study of solids geometry and left to future generations all his work.

By the way, Coxeter
lived by the same years than the famous artist M.C. Escher of who, as it was
said, could forget any other thing in his baggage with the exception of a polyhedron!

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