4 citations · 4 across the 5 of their papers we have counts for
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math.GR2004
An ascending HNN extension of a free group inside SL(2,C)
Danny Calegari, Nathan M. Dunfield
We give an example of a subgroup of SL(2,C) which is a strictly ascending HNN extension of a non-abelian finitely generated free group F. In particular, we exhibit a free group F i…
math.GT2004★ 4 cited
Shrinkwrapping and the taming of hyperbolic 3-manifolds
Danny Calegari, David Gabai
We introduce a new technique for finding CAT(-1) surfaces in hyperbolic 3-manifolds. We use this to show that a complete hyperbolic 3-manifold with finitely generated fundamental g…
math.GT2004
Circular groups, planar groups, and the Euler class
Danny Calegari
We study groups of C^1 orientation-preserving homeomorphisms of the plane, and pursue analogies between such groups and circularly-orderable groups. We show that every such group w…