Some pictures I snapped on my phone at the recent #G4G10 conference: print art, various sculptures (including a...

Some pictures I snapped on my phone at the recent #G4G10 conference: print art, various sculptures (including a zome model and hyperbolic crochet), a 17x17x17 Rubik's Cube, a hyperbolic soccerball made of balloons, and a few more from the event at Tom Rodgers' house...









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Hyperbolic Hopf Fibrations

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Hyperbolic Hopf Fibrations The Hopf Fibration of S^3 is amazing and beautiful.  Rather than describe it here, I'll point you to a lovely online reference with pictures and videos by Niles Johnson. nilesjohnson.net/hopf.html To understand it better (and fibrations in general), I recommend this talk by Niles too. www.youtube.com/watch?v=QXDQsmL-8Us It turns out there is an analogue of the Hopf fibration for H^3.  In fact, there is not just one "fiberwise homogenous" fibration in the hyperbolic case.  There is a 2-parameter family of them, plus one additional fibration that does not fit the family.  As with S^3, fibers in the H^3 cases are geodesics.  They are ultraparallel in fibrations from the family, and parallel in the exceptional fibration.  I found the following dissertation by Haggai Nuchi a good intro and resource to help think about all this. www.math.upenn.edu/grad/dissertations/NuchiThesis.pdf I'm posting three early pictures of H^3 fibrations below, labeled
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