Dihedral -tilings of the sphere by equilateral and scalene triangles. II.
d'Azevedo Breda, A.M., Ribeiro, Patrícia S., Santos, Altino F. (2008)
The Electronic Journal of Combinatorics [electronic only]
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d'Azevedo Breda, A.M., Ribeiro, Patrícia S., Santos, Altino F. (2008)
The Electronic Journal of Combinatorics [electronic only]
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Albert Ko, Martin Roček (2006)
Archivum Mathematicum
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We recall how the Gauss-Bonnet theorem can be interpreted as a finite dimensional index theorem. We describe the construction given in hep-th/0512293 of a function that can be interpreted as a gravitational effective action on a triangulation. The variation of this function under local rescalings of the edge lengths sharing a vertex is the Euler density, and we use it to illustrate how continuous concepts can have natural discrete analogs.
Milans, Kevin G., Schreiber, Daniel H., West, Douglas B. (2011)
The Electronic Journal of Combinatorics [electronic only]
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Ewald, Günter (2001)
Beiträge zur Algebra und Geometrie
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D'Azevedo Breda, A.M., Ribeiro, Patrícia S., Santos, Altino F. (2008)
The Electronic Journal of Combinatorics [electronic only]
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Keevash, Peter, Loh, Po-Shen, Sudakov, Benny (2006)
The Electronic Journal of Combinatorics [electronic only]
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Avelino, Catarina P., Santos, Altino F. (2008)
The Electronic Journal of Combinatorics [electronic only]
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Breda, Ana M., Santos, Altino F. (2005)
Discrete Mathematics and Theoretical Computer Science. DMTCS [electronic only]
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Kang, Ensil, Rubinstein, J.Hyam (2005)
Algebraic & Geometric Topology
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