Reducing Spheres and Klein Bottles after Dehn Fillings
Canadian mathematical bulletin, Tome 46 (2003) no. 2, pp. 265-267
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Let $M$ be a compact, connected, orientable, irreducible 3-manifold with a torus boundary. It is known that if two Dehn fillings on $M$ along the boundary produce a reducible manifold and a manifold containing a Klein bottle, then the distance between the filling slopes is at most three. This paper gives a remarkably short proof of this result.
Oh, Seungsang. Reducing Spheres and Klein Bottles after Dehn Fillings. Canadian mathematical bulletin, Tome 46 (2003) no. 2, pp. 265-267. doi: 10.4153/CMB-2003-026-2
@article{10_4153_CMB_2003_026_2,
author = {Oh, Seungsang},
title = {Reducing {Spheres} and {Klein} {Bottles} after {Dehn} {Fillings}},
journal = {Canadian mathematical bulletin},
pages = {265--267},
year = {2003},
volume = {46},
number = {2},
doi = {10.4153/CMB-2003-026-2},
url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2003-026-2/}
}
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