Vertex-Mean Graphs

A graph that has a Smarandachely vertex-mean k-labeling is called Smarandachely k vertex-mean graph or Smarandachely k V -mean graph. Particularly, if k = 0, such a Smarandachely vertex-mean 0-labeling and Smarandachely 0 vertex-mean graph or Smarandachely 0 V -mean graph is called a vertex-mean labeling and a vertex-mean graph or V -mean graph, respectively.