For a graph G = ( V , E ) and set S ⊆ of size at least 2, an S-Steiner tree T is subgraph that with . Two -Steiner trees ′ are internally disjoint (resp. edge-disjoint if ∩ ∅ ). Let κ λ denote the maximum number edge-disjoint) in The k-tree connectivity k edge-connectivity then defined as minimum ), where ranges over all -subsets In Li et al. (2018) [12] authors conjectured connected has vertic...