The Blaschke conjecture and great circle fibrations of spheres
classification
🧮 math.DG
keywords
diffeomorphismfibrationgreatalgebraicblaschkecirclecirclesconjecture
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We construct an explicit diffeomorphism taking any fibration of a sphere by great circles into the Hopf fibration, using elementary geometry--indeed the diffeomorphism is a local (differential) invariant, algebraic in derivatives.
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