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arXiv · 2102.06394

Trivial cup products in bounded cohomology of the free group via aligned chains

Sofia Amontova·Michelle Bucher
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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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Sofia Amontova, Michelle Bucher. 2021-02-12. Trivial cup products in bounded cohomology of the free group via aligned chains. https://arxiv.org/abs/2102.06394

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