suppose $G$ is 2-connected and $G$ is not a cycle, is it possible to prove that there exists a vertex $v$ such that $G-v$ is still 2-connected?
$G-v$ means remove $v$ from vertex and all incident edges
suppose $G$ is 2-connected and $G$ is not a cycle, is it possible to prove that there exists a vertex $v$ such that $G-v$ is still 2-connected?
$G-v$ means remove $v$ from vertex and all incident edges
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