On basic forbidden patterns of functions

The allowed patterns of a map on a one-dimensional interval are those permutations that are realized by the relative order of the elements in its orbits. The set of allowed patterns is completely determined by the minimal patterns that are not allowed. These are called basic forbidden patterns.In this paper, we study basic forbidden patterns of several functions. We show that the logistic map Lr(x)=rx(1−x)Lr(x)=rx(1−x) and some generalizations have infinitely many of them for 1