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math.GT2004★ 1 cited
The Smale Conjecture for lens spaces
Sungbok Hong, Darryl McCullough, J. Hyam Rubinstein
The original Smale Conjecture asserted that the inclusion of the group O(4) of isometries of the round 3-sphere S into the full diffeomorphism group Diff(S) is a homotopy equivalen…
math.GT1998
Concentration points for Fuchsian groups
Sungbok Hong, Darryl McCullough
A limit point p of a discrete group of Mobius transformations acting on S^n is called a concentration point if for any sufficiently small connected open neighborhood U of p, the se…
math.GT1997
Ubiquity of geometric finiteness in mapping class groups of Haken 3-manifolds
Sungbok Hong, Darryl McCullough
Mapping class groups of Haken 3-manifolds enjoy many of the homological finiteness properties of mapping class groups of 2-manifolds of finite type. For example, H(M) has a torsion…