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تسجيل مستخدم جديدTrivial cup products in bounded cohomology of the free group via aligned chains
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We prove that the cup product of $Delta$-decomposable quasimorphisms with any bounded cohomology class of arbitrary positive degree is trivial. As a corollary we obtain that this is also the case for Brooks quasimorphisms (in particular on selfoverlapping words) and Rolli quasimorphisms.
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