Friendliness of generalized wheel
Wen Yi-hui · Journal of Lanzhou University · 2008
By introducing label parameters of graph,this paper gave the friendly index set of generalized wheel W_n~k(n≥3,k≥1),proved that the W_n~(2s) is cordial if n≠2(mod4),and the W_n~(2s+1) is cordial if n≠3(rood4) for natural numbers s≥1,n≥3.