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Explicit representations by halfspaces of the edge cone of a graph

Let G be an arbitrary simple graph. The main results are explicit representations of the edge cone of G as a finite intersection of closed halfspaces. If G is bipartite and connected we determine the facets of the edge cone and present a canonical irreducible representation.

preprint2005arXivOpen access
Carlos E. ValenciaRafael H. Villarreal
math.CO
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Carlos E. ValenciaRafael H. Villarreal

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