Infinite sums of Brooks quasimorphisms and cup products in bounded cohomology

24 Feb 2020 Facio Francesco Fournier

We study a class of quasimorphisms of the free group that can be expressed as infinite sums of Brooks quasimorphisms with some nice properties. We then review Heuer's framework of decompositions developed in arXiv:1710.03193, and put these quasimorphisms in that context... (read more)

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  • GROUP THEORY