@Article{Samodivkin2008, author = "Samodivkin, Vladimir", title = "On equality in an upper bound for the acyclic domination number", journal = "Opuscula Math.", year = "2008", volume = "28", number = "3", pages = "331--334", doi = "http://dx.doi.org/10.7494/OpMath.2008.28.3.331", url = "http://dx.doi.org/10.7494/OpMath.2008.28.3.331", abstract = "A subset \(A\) of vertices in a graph \(G\) is acyclic if the subgraph it induces contains no cycles. The acyclic domination number \(\gamma_a(G)\) of a graph \(G\) is the minimum cardinality of an acyclic dominating set of \(G\). For any graph \(G\) with \(n\) vertices and maximum degree \(\Delta(G)\), \(\gamma_a(G) \leq n - \Delta(G)\). In this paper we characterize the connected graphs and the connected triangle-free graphs which achieve this upper bound.", keywords = "dominating set, acyclic set, independent set, acyclic domination number", issn = "1232-9274" }