Grisha Perelman may have solved one of topology's big questions and one of the Millenium Prize Problems, Poincaré's conjecture. But where did he go? | nytimes
A rabbit is a sphere because it doesn't have a hole? Then why does food go in one end and those lovely little pellets come out the other? A rabbit is a torus.
It's very tempting to imagine that this guy found some kind of hole in space and just walked around the corner to another universe.
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A rabbit is a sphere because it doesn't have a hole? Then why does food go in one end and those lovely little pellets come out the other? A rabbit is a torus.
It's very tempting to imagine that this guy found some kind of hole in space and just walked around the corner to another universe.
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