Abstract
Twisting process for homogeneous algebras is defined. It consists of a particular kind of actual deformations controlled by a multiplicative cosimplicial quasicomplex C • related to each homogeneous algebra. The elements implementing twist transformations are a subclass of the counital 2-cocycles of C • . Such transformations are studied by means of their co-homological properties. It is shown they define an equivalence relation between homogeneous algebras, in such a way that cubic Artin–Schelter regular algebras of type S 1 (including parafermionic and plactic algebras with two generators) belong to the same class.
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