Suppose we have an outer-planar graph $G$. Is the following expression true? If yes, please prove it. If no, please give a counterexample.
After running LexBFS on $G$, we will have a vertex order $v_1,...,v_n$ so that $\forall i: indeg(v_i)\leq2$.
2026-03-27 19:32:12.1774639932
Result of LexBFS on an outer-planar graph
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