Author

Sebastian Wiederrecht

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Preprint Jul 2026

Spanning Paths and Cycles: Structural Limitations of the Irrelevant Vertex Technique

A new local structure theorem for annotated graphs of bounded $\mathsf{depth}_2$ with a spanning analogue of the celebrated Vital Linkage Theorem and matching lower bounds showing that beyond bounded $\mathsf{depth}_2$ no irrelevant-vertex rule can exist, even on planar graphs.

D. Thilikos, Sebastian Wiederrecht · 0 citations