G Rottenfusser,
D Schleicher - arXiv preprint math/0403012, 2004 - arxiv.org
We study the dynamics of iterated cosine maps $ E\colon z\mapsto ae^ z+ be^{-z}, $ with $
a, b\in\C\setminus\{0\} $. We show that the points which converge to infinity under iteration …