The Bohl transformation is one of the basic tools of the oscillation theory of Sturm-Liouville second order differential equations. We present various extensions of this transformation, including formulation of some open problemsa associated with this transformation.
The Bohl transformation is one of the basic tools of the oscillation theory of Sturm-Liouville second order differential equations. We present various extensions of this transformation, including formulation of some open problemsa associated with this transformation. (en)