en تخصصي Special پژوهشي Research paper <p></p> <p>In this paper, we investigate domination number as well as signed domination numbers of Cay(G : S) for all cyclic group G of order n, where n in {p^m; pq} and&nbsp;S = { a^i : i in B(1; n)}. We also introduce some families of connected regular graphs gamma such that gamma_S(Gamma) in {2,3,4,5 }.</p> Cayley graph, cyclic group, Domination number, Signed domination number. 35 42 http://ijmsi.ir/browse.php?a_code=A-10-1978-1&slc_lang=en&sid=1 F. Ramezani f.ramezani988@gmail.com 10031947532846007032 10031947532846007032 Yes Imam Khomeini International University E. Vatandoost vatandoost@sci.ikiu.ac.ir 10031947532846007033 10031947532846007033 No Imam Khomeini International University