Combinatorial curvature for planar graph
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Yusuke Higuchi
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Article
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2001
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John Wiley and Sons
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English
β 113 KB
## Abstract Regarding an infinite planar graph __G__ as a discrete analogue of a noncompact simply connected Riemannian surface, we introduce the combinatorial curvature of __G__ corresponding to the sectional curvature of a manifold. We show this curvature has the property that its negative values