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math.GR2019
Subgroup distortion of 3-manifold groups
Hoang Thanh Nguyen, Hongbin Sun
In this paper, we compute the subgroup distortion of all finitely generated subgroups of all finitely generated 3-manifold groups, and the subgroup distortion in this case can only…
math.GR2019★ 1 cited
An effective Lie--Kolchin theorem for quasi-unipotent matrices
Thomas Koberda, Feng Luo, Hongbin Sun
We establish an effective version of the classical Lie--Kolchin Theorem. Namely, let be quasi--unipotent matrices such that the Jordan Canonical F…