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arxiv: 1105.4444 · v1 · pith:JZN2UJBDnew · submitted 2011-05-23 · 🧮 math.GT · math.AT· math.GR

On closed leaves of foliations, multisections and stable commutator lengths

classification 🧮 math.GT math.ATmath.GR
keywords foliationsstableanswerclosedcommutatorleaveslengthsmultisections
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We give examples of foliations that answer two questions posed by Mitsumatsu and Vogt about the genus minimising properties of closed leaves of 2-dimensional foliations on 4-manifolds. By studying stable commutator lengths in certain stable mapping class groups, we also answer an asymptotic version of another question of theirs concerning bounds on self-intersection numbers of multisections in surface bundles.

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