On spherical CR uniformization of 3-manifolds
Résumé
We consider the three discrete representations in the Falbel-Koseleff-Rouillier census where the peripheral subgroups have cyclic holonomy. We show that two of these representations have conjugate images, even though they represent different 3-manifold groups. This illustrates the fact that a discrete representation $\pi_1(M)\rightarrow PU(2,1)$ with cyclic unipotent boundary holonomy is not in general the holonomy of a spherical CR uniformization of $M$.
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