Dustin Baker
University of Minnesota Duluth

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Decomposing K18n and K18n + 1 into connected unicyclic graphs with 9 edges Grace Aspenson; Dustin Baker; Bryan Freyberg; Coy Schwieder
Electronic Journal of Graph Theory and Applications (EJGTA) Vol 11, No 1 (2023): Electronic Journal of Graph Theory and Applications
Publisher : GTA Research Group, Univ. Newcastle, Indonesian Combinatorics Society and ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/ejgta.2023.11.1.22

Abstract

Other than C9 there are 239 connected unicyclic graphs with exactly 9 edges. We use established graph labeling results to prove that every one of them decomposes the complete graph Kn if n ≡ 0 or 1 (mod 18).