On essential self-adjointness of singular Sturm-Liouville operators

S. Blake Allan, Fritz Gesztesy, Alexander Sakhnovich

Considering singular Sturm--Liouville differential expressions of the type \[ τ_α = -(d/dx)x^α(d/dx) + q(x), \quad x \in (0,b), \; α\in \mathbb{R}, \] we employ some Sturm comparis…