Weak stable bundle (source code)

= Weak stable bundle
{title2=$E^{ws}=E^s\oplus\mathbb RF$}

The weak stable bundle adjoins the flow direction to the strong stable bundle. It is tangent to the weak stable <foliation>. For a <geodesic flow> on a <hyperbolic surface>, the canonical frame gives $E^{ws}=\operatorname{span}\{X,H-V\}$.