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most citedDehn functions of subgroups of products of free groups. Part II: Precise computations

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math.GR2025

Virtual homological torsion in graphs of free groups with cyclic edge groups

Dario Ascari, Jonathan Fruchter

Let be a hyperbolic group that splits as a graph of free groups with cyclic edge groups. We prove that, unless is isomorphic to a free product of free and surface groups, e…

math.GR2025★ 1 cited

Dehn functions of subgroups of products of free groups. Part II: Precise computations

Dario Ascari, Federica Bertolotti, Giovanni Italiano +2

We prove that the Bridson-Dison group has quartic Dehn function, thereby providing the first precise computation of the Dehn function of a subgroup of a direct product of free grou…