K_（1，n）－free图的［a，b］－因子

[a,b]-FACTORS IN K_(1,n)-FREE GRAPHS

一个图称为Ｋ１，ｎ－ｆｒｅｅ图如果它不含Ｋ１，ｎ作为其导出子图．文中讨论了Ｋ１，ｎ－ｆｒｅｅ图有［ａ，ｂ］－因子的一些充分条件．

A graph is said to be K1,n-free,if it contains no K1.n as an induced subgraph. Some sufficient conditions for the existence of [a,b]--factors in K1,n-free simple graphs are given.