Non-differentiable irrational curves for twist map
Abstract We construct a $C^1$ symplectic twist map g of the annulus that has an essential invariant curve $\Gamma $ such that $\Gamma $ is not differentiable and g restricted to $\Gamma $ is minimal.
1994 ◽
Vol 14
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pp. 807-815
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2013 ◽
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pp. 19-41
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2012 ◽
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2013 ◽
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1984 ◽
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1993 ◽
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