The coneept of the absolute midian set on a nonoriented network were presented and its some properties, structure and algorithms were auther studied, it laid the foundotions for a theory of the generic absolute median set on a nonoriented network.

• 深入研究无向网络绝对中位点集的性质、结构及算法，为进一步研究无向网络一般绝对中位点集的性质、结构及算法奠定基础。