arXiv · 1210.3717
For a $C^{1}$ degree two latitude preserving endomorphism $f$ of the 2-sphere, we show that $f$ has $2^{n}$ periodic points.
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Charles Pugh, Michael Shub. 2012-10-13. Periodic Points on the 2-sphere. https://arxiv.org/abs/1210.3717
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