8 papers
On automorphisms, quasimorphisms, and coarse automorphisms of acylindrically hyperbolic groups
Ashot Minasyan, Alessandro Sisto, Federico Vigolo
We investigate the action of the automorphism group of an acylindrically hyperbolic group G on its space of homogeneous quasimorphisms, and identify its kernel with the subgroup of…
Property (LR) and an embedding theorem for virtually free groups
Ashot Minasyan
We prove that every virtually free group has property (LR) of Long and Reid: each finitely generated subgroup of is a retract of a finite index subgroup. The main ingredien…
Property (VRC) and virtual fibering for amalgamated free products
Jon Merladet Urigüen, Ashot Minasyan
This paper focuses on studying properties of amalgamated free products , where the amalgamated subgroup is virtually cyclic. First, we prove that if the fac…
Virtual retractions in free constructions
Jon Merladet Urigüen, Ashot Minasyan
A group has property (VRC) if every cyclic subgroup is a virtual retract. This property is stable under many standard group-theoretic constructions and is enjoyed by all virtua…
On the proofs of Leighton's Graph Covering Theorem, a notion dual to commensurability, and normal virtual retracts
Nicholas Touikan, Ashot Minasyan
Leighton's Graph Covering Theorem states that if two finite graphs have the same universal covering tree, then they also have a common finite degree cover. Bass and Kulkarni gave a…
Right-angled Artin subgroups and free products in one-relator groups
Ashot Minasyan, Motiejus Valiunas
We investigate criteria ensuring that a one-relator group contains a right-angled Artin subgroup , corresponding to a finite graph . In particular, we prove that if…