English

Some exact inducibility-type results for graphs via flag algebras

Combinatorics 2026-02-12 v4

Abstract

The (κ,)(\kappa,\ell)-edge-inducibility problem asks for the maximum number of κ\kappa-subsets inducing exactly \ell edges that a graph of given order nn can have. Using flag algebras and stability approach, we resolve this problem for all sufficiently large nn (including a description of all extremal and almost extremal graphs) in eleven new non-trivial cases when κ7\kappa\le 7. We also compute the FF-inducibility constant (the asymptotically maximum density of induced copies of FF in a graph of given order nn) and obtain some corresponding structure results for three new graphs FF with 55 vertices: the 3-edge star plus an isolated vertex, the 4-cycle plus an isolated vertex, and the 4-cycle with a pendant edge.

Keywords

Cite

@article{arxiv.2507.01596,
  title  = {Some exact inducibility-type results for graphs via flag algebras},
  author = {Levente Bodnár and Oleg Pikhurko},
  journal= {arXiv preprint arXiv:2507.01596},
  year   = {2026}
}

Comments

38 pages, ancillary files

R2 v1 2026-07-01T03:43:02.897Z