For 15,80 euro you get a truly beautiful (pocket)book.
After browsing the first pages I am now able to prove Euler's formula on Polyhedra, the beautiful F(aces) - E(dges) + V(ertices) = 2. I can even explain what a polyhedron is in these few, simple and (in fact) beautiful words: A polyhedron is a complex which is topologically equivalent to a sphere.
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