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extremal graph theory 1forbidden subgraphs 1outerplanar graphs 1planar graphs 1spectral graph theory 1

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1 paper

math.CO2026

Spectral extremal problems on planar and outerplanar graphs without $C_{k,l}

Jiamin Li, Dan Li, Xilong Yin +1

The paper determines the maximum spectral radius and the unique extremal planar and outerplanar graphs that avoid the graph C_{k,l} (two cycles sharing a vertex) for all large n.