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math.GR2014
Characterising actions on trees yielding non-trivial quasimorphisms
Alessandra Iozzi, Cristina Pagliantini, Alessandro Sisto
We study the construction of quasimorphisms on groups acting on trees introduced by Monod and Shalom, that we call median quasimorphisms, and in particular we fully characterise ac…
math.GR2014
Infinitely presented graphical small cancellation groups are acylindrically hyperbolic
Dominik Gruber, Alessandro Sisto
We prove that infinitely presented graphical small cancellation groups are acylindrically hyperbolic. In particular, infinitely presented classical -groups and, hence…