BOUNDS ON THE LOWER SIZE OF A 7-CRITICAL GRAPH  

作　　者：刘焕平 张忠辅 沈德安 

出　　处：《Acta Mathematicae Applicatae Sinica》1994年第4期411-413,141+415-418,共8页应用数学学报（英文版）

摘　　要：In this paper, the authors have obtained some lower bounds on the size of a 7-critical graph,and some results about the planar graph conjecture have been given.In this paper, the authors have obtained some lower bounds on the size of a 7-critical graph,and some results about the planar graph conjecture have been given.

关 键 词：EDGE-COLORING chromatic index Δ-critical graph planar conjecture 

分 类 号：O157[理学—数学]