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From the topological point of view, this object is a surface of genus 16, that can be seen...
A dihedral symmetry of type D1 in this clapper of a gate in Milan. From the point of view...
A hub with cyclic group of symmetry of type C3 (if we ignore the central mark…). We can...
A hub with cyclic group of symmetry of type C5. We can compare it with another hub; or w...
A hub with a dihedral group of symmetry of type D7 (if we ignore the central mark...). Fro...
A hub with a dihedral group of symmetry of type D3 (if we ignore the central mark...). Fro...
A hub with a dihedral group of symmetry of type D4. We can compare it with another hub; ...
A hub with a dihedral group of symmetry of type D4 (if we ignore the central ellipse...). ...
A hub with a dihedral group of symmetry of type D6 (if we ignore the central mark...). Fro...
A dihedral symmetry of type D1 in this clapper in Milan.From the point of view of topology...
