
arXiv: 2309.07905
handle: 20.500.11850/706579
We prove Menger-type results in which the obtained paths are pairwise non-adjacent, both for graphs of bounded maximum degree and, more generally, for graphs excluding a topological minor. More precisely, we show the existence of a constant $C$, depending only on the maximum degree or on the forbidden topological minor, such that for any pair of sets of vertices $X,Y$ and any positive integer $k$, there exists either $k$ pairwise non-adjacent $X\text{-}Y$-paths, or a set of fewer than $Ck$ vertices which separates $X$ and $Y$. We further show better bounds in the subcubic case, and in particular obtain a tight result for two paths using a computer-assisted proof.
Connectivity, Extremal problems in graph theory, Graph minors, Vertex degrees, induced matching, Coloring of graphs and hypergraphs, Combinatorics, 05C38 (Primary) 05C15, 05C40, 05C83 (Secondary), FOS: Mathematics, bounded degree graphs, Combinatorics (math.CO), strong chromatic index, Paths and cycles
Connectivity, Extremal problems in graph theory, Graph minors, Vertex degrees, induced matching, Coloring of graphs and hypergraphs, Combinatorics, 05C38 (Primary) 05C15, 05C40, 05C83 (Secondary), FOS: Mathematics, bounded degree graphs, Combinatorics (math.CO), strong chromatic index, Paths and cycles
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