Fragmentation norm and relative quasimorphisms

Brandenbursky, Michael; Kędra, Jarek

doi:10.1090/proc/14683

Fragmentation norm and relative quasimorphisms
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by Michael Brandenbursky and Jarek Kędra PDF

Proc. Amer. Math. Soc. 150 (2022), 4519-4531 Request permission

Abstract:

We prove that manifolds with complicated enough fundamental group admit measure-preserving homeomorphisms which have positive stable fragmentation norm with respect to balls of bounded measure.

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