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math.CO2020
Cycle convexity and the tunnel number of links
Júlio Araújo, Victor Campos, Darlan Girão +3
In this work, we introduce a new graph convexity, that we call Cycle Convexity, motivated by related notions in Knot Theory. For a graph , define the interval function in…
math.GT2020★ 1 cited
On links minimizing the tunnel number
Darlan Girão, João M. Nogueira, António Salgueiro
We show a combinatorial argument in the diagram of large class of links, including satellite and hyperbolic links, where for each of which the tunnel number is the minimum possible…