【摘要】 本文研究了分数[a,b]-因子和孤立韧度相关性的问题.利用子图分解的方法,获得了一个图存在分数[a,b]-因子的孤立韧度条件,通过反例说明该条件是紧的.改进了原有对分数[a,b]-因子的孤立韧度界.更多还原

【Abstract】 In this paper,we study the relationship between the fractional [a,b]-factor and the isolated toughness.By means of the graph decomposition approach,an isolated toughness condition for a graph admits fractional [a,b]-factor is determined.The sharpness of given bound is explained by a counterexample.This result improves the original isolated toughness bound for fractional [a,b]-factors.更多还原