Modular circle quotients and PL limit sets


We say that a collection Γ of geodesics in the hyperbolic plane H 2 is a modular pattern if Γ is invariant under the modular group PSL2(Z ), if there are only finitely many PSL2(Z )–equivalence classes of geodesics in Γ, and if each geodesic in Γ is stabilized by an infinite order subgroup of PSL2(Z ). For instance, any finite union of closed geodesics on… (More)


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