Does there exist a real quadratic polynomial of Sharkovskys type 2infinity?
A continuous map from the set of real numbers to itself is said to be Sharkosky type 2infinity if it has periods of all powers of 2 but no any other period.
Does there exist a real quadratic polynomial of Sharkovskys type 2infinity? A continuous map from the set of real numbers to itself is said to be Sharkosky type 2infinity if it has periods of all powers of 2 but no any other period. 

