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math.GR2013★ 7 cited
Stable commutator length on mapping class groups
Mladen Bestvina, Ken Bromberg, Koji Fujiwara
Let be a finite index subgroup of the mapping class group of a closed orientable surface , possibly with punctures. We give a precise condition (in terms of the Nie…
math.GR2013★ 14 cited
Bounded cohomology with coefficients in uniformly convex Banach spaces
Mladen Bestvina, Ken Bromberg, Koji Fujiwara
We show that for acylindrically hyperbolic groups (with no nontrivial finite normal subgroups) and arbitrary unitary representation of in a (nonzero) uniformly convex B…