### Duksang Lee (이덕상), Intertwining connectivities for vertex-minors and pivot-minors

### Duksang Lee (이덕상), Intertwining connectivities for vertex-minors and pivot-minors

We show that for pairs (Q,R) and (S,T) of disjoint subsets of vertices of a graph G, if G is sufficiently large, then there exists a vertex v in V(G)−(Q∪R∪S∪T) such that there are two ways to reduce G by a vertex-minor operation while preserving the connectivity between Q and R and the connectivity between S …