D. McCormack

collaborators

2 papers

math.SP1998

Absolute continuity and spectral concentration for slowly decaying potentials

B. M. Brown, M. S. P. Eastham, D. K. R. McCormack

We consider the spectral function $ρ (μ)$ $(μ \geq 0)$ for the Sturm-Liouville equation $y^{^{''}} + (λ - q) y = 0$ on $[0, \infty)$ with the boundary condition $y (0) = 0$ and where $q$ has slow…

math.SP1997

On the spectrum of second order differential operators with complex coefficients

B. M. Brown, W. D. Evans, D. K. R. McCormack +1

The Weyl-Sims classification for a second-order ordinary differential equation with general complex coefficients is investigated. Connections are then established between the assoc…