On outer automorphisms of certain graph $C^{\ast }$-algebras

Swarnendu Datta, Debashish Goswami, Soumalya Joardar

Given a countable abelian group $A$, we construct a row finite directed graph $\hat{I}“(A)$ such that the $K_0$-group of the graph ${\text{C}}^{\ast }$-algebra $\textrm{C}^{\ast}(Γ(A))…