Twisted Rota-Baxter family operators on Hom-associative algebras

Abstract: In this paper, we first define twisted Rota-Baxter family operators on Hom-associative algebras indexed by a semigroup $\Omega$. Then we introduce and study Hom-NS-family algebras as the underlying structures of twisted Rota-Baxter family operators. Meanwhile, We show that a Hom-NS-family algebra induces an ordinary Hom-NS-algebra on the tensor product with the semigroup algebra. Moreover, we define the cohomology of a twisted Rota-Baxter family operator. This cohomology can also be viewed as the cohomology of a certain Hom-$\Omega$-associative algebra with coefficients in a suitable bimodule. Finally, we examine deformations of twisted Rota-Baxter family operators and demonstrate that they are governed by the aforementioned cohomology. The concept of Nijenhuis elements linked to a twisted Rota-Baxter family operator is introduced to provide a sufficient condition for its rigidity.