In her book The Second Estate, Ray Madoff explains how the U.S. tax system lets the ultra-rich grow their wealth tax-free while working Americans bear the burden.

Figure 1 and all other examples in this series are drawn from the SWA Online example; see Part 1 for details., 图 1和这一系列的所有其它示例都是从 SWA Online 示例中抽取出来的，请参阅 第 1 部分了解细节。

Tracking to arbitrary signals in bounded Unified's chaotic system is realized by nonlinear feedback control., 利用非线性反馈控制，实现统一混沌系统在有界条件下对任意信号的追踪。