We prove a number of results on the interrelation between the Lpmetric on the group of Hamiltonian diffeomorphisms of surfaces and the subset A of autonomous Hamiltonian diffeomorphisms. More precisely, we show that there are Hamiltonian diffeomorphisms of all surfaces of genus g ≥ 2 or g = 0 lying arbitrarily Lp-far from the subset A, answering a variant of a question of Polterovich for the Lp-metric.
- Braid groups
- Groups of Hamiltonian diffeomorphisms
- Mapping class groups
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