This analysis identifies 4-connected graphs without K_{3,3}+v minors, suggesting structural insights into graph properties.
Let K3,3+v be the graph obtained by adding a new vertex v to K3,3 and joining v to the four vertices of a $ 4 $-cycle. In this paper, we characterize all $ 4 $-connected graphs that do not contain K3,3+v as a minor.
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Wei et al. (2025) studied this question.
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