# Dehn surgeries that yield fibred 3-manifolds

@article{Ni2007DehnST,
title={Dehn surgeries that yield fibred 3-manifolds},
author={Yi Ni},
journal={Mathematische Annalen},
year={2007},
volume={344},
pages={863-876}
}
• Yi Ni
• Published 28 December 2007
• Mathematics
• Mathematische Annalen
We study Dehn surgeries on null-homotopic knots that yield fibred 3-manifolds when an additional (but natural) homological restriction is imposed. The major tool used is Gabai’s theory of sutured manifold decomposition. Such surgeries are negative examples to a question of Michel Boileau. Another result we will prove is about surgeries which reduce the Thurston norm of a fibred manifold.
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