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math.GT2024
Coloring spheres in 3--manifolds
Edgar A. Bering, Bennett Haffner, Estephanie Ortiz +1
The sphere graph of , a connect sum of copies of was introduced by Hatcher as an analog of the curve graph of a surface to study the outer automorphism gro…
math.GR2024
On two-generator subgroups of mapping torus groups
Naomi Andrew, Edgar A. Bering, Ilya Kapovich +2
We prove that if is the mapping torus group of an injective endomorphism of a free group (of possibly infinite r…