关于图P（6k＋2）^3∪Pn^3的优美性

摘要

讨论了形如P（6k＋2）^3∪Pn^3非连通并图的优美性,用构造性的方法给出P（6k＋2）^3∪Pn^3的优美标号,并证明P（6k＋2）^3∪Pn^3是交错图。%The gracefulness of disconnected graph of P（6k＋2）^3∪Pn^3is discussed. The graceful labelings are given. It also proves that union graph of P P（6k＋2）^3∪Pn^3 are alternating graph.