【摘要】 讨论了最小临界图的某些性质，并得到最小临界图Ｇ的围长ｇ（Ｇ）＞５．更多还原

【Abstract】 In this paper, some properties of critical graphs are discussed and the result that the girth of minimum critical graph g(G) is more than 5 is obtained.更多还原