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Round Trees and Conformal Dimension in Random Groups: low density to high density

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arxiv 2204.05165 v1 pith:B5L5HSCD submitted 2022-04-11 math.GR math.GT

classification math.GRmath.GT
keywords densitygroupsrandomconformaldimensiongromovlowerround
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abstract

We investigate conformal dimension for the class of infinite hyperbolic groups in the Gromov density model $\mathcal{G}^d_{m,l}$ of random groups with $m \geq 2$ fixed generators, density $0 < d < 1/2$ and relator length $l \to \infty$. Our main result is a lower bound linear in $l$ at all densities $0 < d < 1/2$ achieved by building undistorted round trees coming directly from lower density Gromov random groups.

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Cited by 3 Pith papers

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  1. Conformal dimension bounds for certain Coxeter group Bowditch boundaries

    math.GT 2025-04 conditional novelty 8.0 of 10

    Large-type Coxeter groups on complete graphs have Bowditch boundary conformal dimension bounded by roughly 1+log(m)/log(2M) from below and 13+12log m+19log M from above, separating them into infinitely many quasi-isom...

  2. Conformal dimension bounds, Pontryagin sphere boundaries, and algebraic fibering of right-angled Coxeter groups

    math.GR 2025-10 conditional novelty 7.0 of 10

    (n,m)-branching graphs give right-angled Coxeter groups with boundary conformal dimension at least 1 + log n/log(3m-7), yielding infinitely many quasi-isometry classes with Pontryagin sphere boundary and with virtual ...

  3. Visual metrics on boundaries of hyperbolic spaces

    math.GT 2025-06 conditional novelty 2.0 of 10

    An expository article on visual metrics on boundaries of hyperbolic spaces, quasisymmetries, conformal dimension, and round trees.

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