A partial horseshoe structure at an indeterminate point of birational mapping

Abstract

In this paper, we show that, for some birational mapping $F$ of $\mathbb{P} ^{2}$ with an indeterminate point $I_{1}$, there exists a partial horseshoe structure at $I_{1}$ and periodic points of $F$ accumulate at $I_{1}$. This is a new dynamical model that gives a chaotic phenomenon in a neighbourhood of the indeterminate point $I_{1}$ at which $F$ is not continuous.