Publication: Study of the Gromov hyperbolicity constant on graphs
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Publication date
2022-02
Defense date
2022-04-07
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Abstract
The concept of Gromov hyperbolicity grasps the essence of negatively curved spaces like the classical hyperbolic space and Riemannian manifolds of negative sectional curvature. It is remarkable that a simple concept leads to such a rich general theory. The study of hyperbolic graphs is an interesting topic since the hyperbolicity of any geodesic metric space is equivalent to the hyperbolicity of a graph related to it.
In this Ph. D. Thesis we characterize the hyperbolicity constant of interval graphs and circular-arc graphs. Likewise, we provide relationships between dominant sets and the hyperbolicity constant.
Finally, we study the invariance of the hyperbolicity constant when the graphs are transformed by several operators.
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Gromov hyperbolicity, Graphs