A discrete curvature on a planar graph

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Given a planar graph derived from a spherical, euclidean or hyperbolic tessellation, one can define a discrete curvature by combinatorial properties, which after embedding the graph in a compact 2d-manifold, becomes the Gaussian curvature.
LaTeX, 14 pages. Dedicated to Alberto Galindo on the occasion of his 70th birthday. In "Encuentros de Fisica Fundamental Alberto Galindo" (Ed. Departamento de Fisica Teorica I de la Universidad Complutense de Madrid) November 2004

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General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/35155

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0412094
 http://arxiv.org/abs/gr-qc/0412094

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arXiv