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math.GR2023
Quadratic Isoperimetric Inequality for Mapping Tori of Hyperbolic Groups
Qianwen Sun
In this paper, we establish that the mapping torus of a one-ended torsion-free hyperbolic group exhibits a quadratic isoperimetric inequality.
math.GR2022
Dehn functions for mapping tori of amalgam of free groups
Qianwen Sun
For an amalgam of two free groups and a particular kind of automorphism, we show that the Dehn function of the corresponding mapping torus is quadratic.