We introduce a class of systems without multiple mixing. The sets with respect to which the mixing is considered are not assumed to coincide. This class contains Ledrappier’s example as a particular case. We prove that there are no multidimensional flows among such systems.

中文翻译：

---

关于非一致集合的多重混合

我们介绍一类没有多重混合的系统。认为混合所考虑的集合不重合。此类包含Ledrappier的示例作为特例。我们证明了这样的系统之间没有多维流。