$\sigma$-PBW Extensions of Skew Armendariz Rings
  The aim of this paper is to investigate a general notion of $\sigma$-PBW extensions over Armendariz rings. As an application, the properties of being Baer, quasi-Baer, p.p. and p.q.-Baer are established for these extensions. We generalize several results in the literature for Ore extensions of injective type and skew PBW extensions. 
Armando Reyes and H\'ector Su\'arez
math.RA math.OA