From: Nielsen type numbers and homotopy minimal periods for maps on solvmanifolds with \(\operatorname{Sol}_{1}^{4}\)-geometry
HPer( f )
Linearization matrix F is conjugate to
∅
or (γδ = ±1)
{1}
(γδ = 0) or
\(\mathbb{N}-\{2\}\)
\(\mathbb{N}\)
(ζ ≠ 0,±1,−2)
\(\mathbb{N}-2\mathbb{N}\)
(γδ ≠ 0,±1)