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$f:\mathbb R \to \mathbb R $ continuous, with a point of odd period, implies existence of a point of even period

This is the question. I can't prove it. It's an exercise to prove Sarkovskii theorem, but it on I have to do this part and I'm ready.

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In math.stackexchange.com/questions/2901/period-of-3-implies-chaos there are useful links –  Ross Millikan Oct 28 '11 at 18:17
    
What does "it on I have to do this part and I'm ready" mean? and what are you ready for? –  Gerry Myerson Oct 28 '11 at 21:51
    

1 Answer 1

The answer to this question appear in the book dynamical systems by Robert Devaney. In this book, Devaney give a proof for Sarkovskii theorem, may be you will see this proof and take the idea for you exercice. I hope this be useful.

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