“…Since its introduction, ring-theoretical and homological properties of skew PBW extensions have been studied by some people (e.g. [5], [21], [22], [23], [44], [47], [70], [25], [56], [61], [66], [68], [69]). As a matter of fact, a book that includes several of the works carried out for these extensions has been published (Fajardo et al [16]).…”