Abstract
In this note, we study deformations of discrete and Zariski dense subgroups of in the isometry group of quaternionic hyperbolic space. Specifically, we consider two examples coming from representations of 3-manifold groups (the figure eight knot and Whitehead links complement) and show opposite behaviors: one is not deformable outside U(2, 1), while the other has a big space of deformations in .
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