Perfect codes and regular sets in vertex-transitive graphs

Alireza Abdollahi, Zeinab Akhlaghi, Majid Arezoomand

A subset \( C \) of the vertex set \( V \) of a graph \( Γ= (V,E) \) is termed an $(r,s)$-regular set if each vertex in \( C \) is adjacent to exactly \( r \) other vertices in \(…