Abstract
In the classical vertex cover problem, we are given a graph $$G=(V,E)$$ and we aim to find a minimum cardinality cover of the edges, i.e. a subset of the vertices $$C \subseteq V$$ such that for every edge $$e \in E$$ , at least one of its extremities belongs to C. In the Min-Power-Cover version of the vertex cover problem, we consider an edge-weighted graph and we aim to find a cover of the edges and a valuation (power) of the vertices of the cover minimizing the total power of the vertices. We say that an edge e is covered if at least one of its extremities has a valuation (power) greater than or equal than the weight of e. In this paper, we consider Min-Power-Cover variants of various classical problems, including vertex cover, min cut, spanning tree and path problems.
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