A new proof of Delahan's induced-universality result

Published 9 Mar 2026 in cs.DM and math.CO | (2603.08106v1)

Abstract: We give a short and self-contained proof of Delahan's theorem stating that every simple graph on $n$ vertices occurs as an induced subgraph of a Steinhaus graph on $\frac{n(n-1)}{2}+1$ vertices. This new proof is obtained by considering the notion of generating index sets for Steinhaus triangles.

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Jonathan Chappelon

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