Results 61 to 70 of about 435 (132)

Gromov hyperbolicity of minor graphs

open access: yes, 2015
If $X$ is a geodesic metric space and $x_1,x_2,x_3\in X$, a geodesic triangle $T=\{x_1,x_2,x_3\}$ is the union of the three geodesics $[x_1x_2]$, $[x_2x_3]$ and $[x_3x_1]$ in $X$. The space $X$ is $ $-hyperbolic (in the Gromov sense) if any side of $T$ is contained in a $ $-neighborhood of the union of the two other sides, for every geodesic triangle
Carballosa, Walter   +3 more
openaire   +2 more sources

Properties of sets of isometries of Gromov hyperbolic spaces [PDF]

open access: yesGroups, Geometry, and Dynamics, 2018
We prove an inequality concerning isometries of a Gromov hyperbolic metric space, which does not require the space to be proper or geodesic. It involves the joint stable length, a hyperbolic version of the joint spectral radius, and shows that sets of isometries behave like sets of 2 \times 2
openaire   +6 more sources

Non-amenability and visual Gromov hyperbolic spaces [PDF]

open access: yesGroups, Geometry, and Dynamics, 2017
We prove that a uniformly coarsely proper hyperbolic cone over a bounded metric space consisting of a finite union of uniformly coarsely connected components each containing at least two points is non-amenable and apply this to visual Gromov hyperbolic spaces.
openaire   +5 more sources

Bounds on Gromov hyperbolicity constant in graphs

open access: yesProceedings - Mathematical Sciences, 2012
If X is a geodesic metric space and x1,x2,x3 ∈ X, a geodesic triangleT = {x1,x2,x3} is the union of the three geodesics [x1x2], [x2x3] and [x3x1] in X. The space X is δ-hyperbolic (in the Gromov sense) if any side of T is contained in a δ-neighborhood of the union of two other sides, for every geodesic triangle T in X.
José M. Sigarreta, José M. Rodríguez
openaire   +2 more sources

Universality in long-distance geometry and quantum complexity. [PDF]

open access: yesNature, 2023
Brown AR   +3 more
europepmc   +1 more source

Sharp estimates of the Kobayashi metric and Gromov hyperbolicity

open access: yesJournal of Mathematical Analysis and Applications, 2008
Let D be a smooth relatively compact and strictly J-pseudoconvex domain in a four dimensional almost complex manifold (M,J). We give sharp estimates of the Kobayashi metric. Our approach is based on an asymptotic quantitative description of both the domain D and the almost complex structure J near a boundary point.
openaire   +3 more sources

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