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A graph is a brick if it is 3-connected and has a perfect matching for any two distinct vertices and of . Lucchesi and Murty proposed a problem concerning the characterization of bricks, distinct from , and the Petersen graph, in which every -invariant edge is solitary. In this paper, we present a characterization of this problem when the bricks are claw-free.

生成讲解博客的中文版本

生成AI智能校验的中文版本