4 citations · 5 across the 3 of their papers we have counts for
3 papers
math.SP2001
Eigenvalues of an elliptic system
E. B. Davies
We describe the spectrum of a non-self-adjoint elliptic system on a finite interval. Under certain conditions we find that the eigenvalues form a discrete set and converge asymptot…
math.SP1999★ 4 cited
On eigenfunction approximations for typical non-self-adjoint Schroedinger operators
A. Aslanyan, E. B. Davies
We construct efficient approximations for the eigenfunctions of non-self-adjoint Schroedinger operators in one dimension. The same ideas also apply to the study of resonances of se…
math.SP1998★ 1 cited
Spectral Instability for Some Schroedinger Operators
A. Aslanyan, E. B. Davies
We define the concept of instability index of an isolated eigenvalue of a non-self-adjoint operator, and prove some of its general properties. We also describe a stable procedure f…