Gingerbreadman map

Etymology
From its shape, resembling a gingerbread man.

Noun
\begin{cases} x_{n+1} = 1 - y_n + |x_n|\\ y_{n+1} = x_n \end{cases} $$.
 * 1)  In dynamical systems theory, a chaotic two-dimensional map given by the piecewise linear transformation $$