In the paper , the connectivity and diameters of sell - complementary 2 - multigraphs and sell - complementary digraphs are discussed , and if these graphs get disrupted the relations for the number ob edges and vertices between the two connected components are also studied in self - complementary permutation 摘要本文討論了2 -重自補(bǔ)圖和有向自補(bǔ)圖的連通性以及2 -重自補(bǔ)圖的直徑,同時以自補(bǔ)置換作為工具研究了當(dāng)2 -重自補(bǔ)圖或有向自補(bǔ)圖被分成兩個連通分支后,這兩個連通分支之間的邊數(shù)與頂點(diǎn)數(shù)之間的關(guān)系。