Let G = V(G,E be a simple graph with |V| vertices and |E| edges. Let |V|= p,|E|= q, if there exists f: V →{1,2,...,p} be an injective mapping, and define an inducedfunction f":E→{1,2,...,q} by setting f"=|f-f| for all∈E. If f maps E onto {1,2,...,q}, then f is said to be a Skolem-graceful labeling of G, the graph G is said to be a Skolem-graceful graph.

對一個給定的簡單圖G=V(G，E国产日韩欧美aaa黄片，|V|和|E|分別是圖G的頂點數(shù)和邊數(shù)看真人视频一级免费毛片，令|V|=p，|E|=qAV免费在线啦，如果存在一個一一映射f：V→{1咬美女奶子舔她的逼视频，2，…欧洲人与动牲交Α欧美精品，p}亚洲欧美另类在线专区，使得對所有邊∈E，由f′=|f-f|所導出的映射函數(shù)f′：E→{169视频免费观看，2AAAAA黄片免费观看，…，q}是一一對應關系欧美乱伦网站，則稱f是圖G的一個Skolem優(yōu)美標號我要看中国黄色网站黄a片，圖G被稱為Skolem優(yōu)美圖。

injective mapping：單射

injective envelope 單射包絡 | injective mapping 單射 | injective object 單射對象

isotonic injective mapping：保序單射映射

isotone valuation 保序賦值 | isotonic injective mapping 保序單射映射 | isotonic mapping 保序映射