Pseudo-Anosovs on closed surfaces having small entropy and the Whitehead sister link exterior

Eiko Kin, Mitsuhiko Takasawa

Let ${\delta }_g$ be the minimal dilatation for pseudo-Anosovs on a closed surface ${\Sigma }_g$ of genus $g$ and let ${\delta }_g^{+}$ be the minimal dilatation for pseudo-Anosovs on ${\Sigma }_g$ with orientable…