2 citations · 4 across the 6 of their papers we have counts for
6 papers
Nilpotent groups with balanced presentations. II
J. A. Hillman
If is a nilpotent group with a balanced presentation and then \cite{Hi22}. We show that if such a group has an abelian nor…
Subnormality in -groups and -Betti numbers
J. A. Hillman
We reconsider work of Elkalla on subnormal subgroups of 3-manifold groups, giving essentially algebraic arguments that extend to the case of -groups and group pairs. However…
-manifolds
J. A. Hillman
We show that -manifolds are Seifert fibred, with general fibre the torus, and base one of the seven flat 2-orbifolds $T, Kb, \mathbb{A}, \mathbb{M…
An infrasolvmanifold which does not bound
J. A. Hillman
Every 4-dimensional infrasolvmanifold with or which is flat or has one of the geometries , , or b…
Parallelizability of 4-dimensional infrasolvmanifolds
J. A. Hillman
We show that if is an orientable 4-dimensional infrasolvmanifold and either or is a - or a -manifold (wit…
Surgery on -manifolds
J. A. Hillman, S. K. Roushon
We show that although closed -manifolds do not admit metrics of nonpositive sectional curvature, the arguments of Farrell and Jones can be exte…