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Trivial cup products in bounded cohomology of the free group via aligned chains
Published 12 Feb 2021 in math.GR | (2102.06394v4)
Abstract: We prove that the cup product of $\Delta$-decomposable quasimorphisms, Brooks quasimorphisms or Rolli quasimorphisms with any bounded cohomology class of arbitrary positive degree is trivial.
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