On Resource Bipartitioning Problem

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Conference Proceeding

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Given a connected graph G = (V, E), two distinct base vertices u 1 ,u2 ∈ Vr, a set Vr ⊆ V of r special vertices and two natural numbers r1,r2 such that r1 + r2 = r, we wish to find a partition V 1, V2 of the vertex set V such that u1 ∈, V1, u2 ∈ V2, Vi induces a connected subgraph Gi of G for each i, 1 ≤ i ≤ 2, V1 contains r1 vertices from Vr and V2 contains r2 vertices from Vr. We call a vertex in Vr a resource vertex and call the above problem of finding a partition as the resource bipartitioning problem. In this paper, we give a simple linear-time algorithm to find such a bipartition of "path-reducible graphs". We also give an algorithm for finding a resource bipartition of a connected graph G where all resource vertices are contained in the same biconnected component of G. We also show that a well-known class of graphs namely "series-parallel graphs" admits a resource bipartitioning. Our algorithm is based on st-numbering of G.



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