The conjecture that every uniform tree is good

Let r2r\ge 2, let TT be an rr-uniform tree, and let nn be a positive integer. An rr-uniform tree TT is nn-good when its Ramsey number against the complete rr-uniform hypergraph satisfies the corresponding goodness equality. The conjecture that every uniform tree is good. If r2r\ge 2 and TT is any rr-uniform tree, then TT is nn-good.

This is stated as a stronger version of the preceding conjecture and would imply that all rr-uniform trees attain the expected Ramsey bound for every nn. The source gives no resolution, while noting that the work already establishes infinitely many examples of 33-uniform trees that are nn-good.

Sources & referencesView supporting material

Primary source

Mark Budden and Andrew Penland, “Trees and n-Good Hypergraphs”, arXiv:1710.05731 (2017).

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