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math.CO2024
Two-edge-connected (not necessarily spanning) subgraphs and polyhedra
Justus Bruckamp, Markus Chimani, Martina Juhnke
Given a graph , we study the -edge-connected subgraph polytope , which is given by the convex hull of the incidence vectors of all -edge-connected subgr…
math.CO2024
The -index of semi-Eulerian posets
Martina Juhnke-Kubitzke, José Alejandro Samper, Lorenzo Venturello
We generalize the definition of the -index of an Eulerian poset to the class of semi-Eulerian posets. For simplicial semi-Eulerian Buchsbaum posets, we show that all coefficien…