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Meta
Tag Archives: Poincare
The Poincaré homology sphere
This illusion (from the Chicago museum of illusions, and duplicated, I believe, in other similar museums in other cities) “almost” appears to give a tiling of \(\mathbf{R}^3\) by regular dodecahedra, which for a number of reasons is not possible. (It … Continue reading
Posted in Art, Mathematics, Travel
Tagged Chicago Museum of Illusions, Mirrors, Not Knot, Poincare, Poincare homology sphere
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