Publications (22)
Dirichlet-to-Neumann Maps, Abstract Weyl-Titchmarsh $M$-Functions, and a Generalized Index of Unbounded Meromorphic Operator-Valued Functions
Jussi Behrndt, Fritz Gesztesy, Helge Holden +1
On a problem in eigenvalue perturbation theory
Fritz Gesztesy, Sergey N. Naboko, Roger Nichols
Simplicity of eigenvalues in Anderson-type models
Sergey Naboko, Roger Nichols, Günter Stolz
On Stability of Square Root Domains for Non-Self-Adjoint Operators Under Additive Perturbations
Fritz Gesztesy, Steve Hofmann, Roger Nichols
On the index of meromorphic operator-valued functions and some applications
Jussi Behrndt, Fritz Gesztesy, Helge Holden +1
Some applications of almost analytic extensions to operator bounds in trace ideals
Fritz Gesztesy, Roger Nichols
A Jost-Pais-type reduction of (modified) Fredholm determinants for semi-separable operators in infinite dimensions
Fritz Gesztesy, Roger Nichols
On square root domains for non-self-adjoint Sturm-Liouville operators
Fritz Gesztesy, Steve Hofmann, Roger Nichols
An Abstract Approach to Weak Convergence of Spectral Shift Functions and Applications to Multi-Dimensional Schrödinger Operators
Fritz Gesztesy, Roger Nichols
Inverse Spectral Problems for Schrödinger-Type Operators with Distributional Matrix-Valued Potentials
Jonathan Eckhardt, Fritz Gesztesy, Roger Nichols +2
Heat kernel bounds for elliptic partial differential operators in divergence form with Robin-type boundary conditions II
Fritz Gesztesy, Marius Mitrea, Roger Nichols +1
Boundary Data Maps and Krein's Resolvent Formula for Sturm-Liouville Operators on a Finite Interval
Stephen Clark, Fritz Gesztesy, Roger Nichols +1
Weak Convergence of Spectral Shift Functions for One-Dimensional Schrödinger Operators
Fritz Gesztesy, Roger Nichols
Supersymmetry and Schrödinger-type operators with distributional matrix-valued potentials
Jonathan Eckhardt, Fritz Gesztesy, Roger Nichols +1
Inverse Spectral Theory for Sturm-Liouville Operators with Distributional Potentials
Jonathan Eckhardt, Fritz Gesztesy, Roger Nichols +1
Heat Kernel Bounds for Elliptic Partial Differential Operators in Divergence Form with Robin-Type Boundary Conditions
Fritz Gesztesy, Marius Mitrea, Roger Nichols
Stability of square root domains associated with elliptic systems of PDEs on nonsmooth domains
Fritz Gesztesy, Steve Hofmann, Roger Nichols
Double operator integral methods applied to continuity of spectral shift functions
Alan Carey, Fritz Gesztesy, Galina Levitina +3
Spectral Properties of the Discrete Random Displacement Model
Roger Nichols, Günter Stolz
Principal Solutions Revisited
Stephen Clark, Fritz Gesztesy, Roger Nichols
On the Global Limiting Absorption Principle for Massless Dirac Operators
Alan Carey, Fritz Gesztesy, Jens Kaad +4
Weyl-Titchmarsh Theory for Sturm-Liouville Operators with Distributional Potentials
Jonathan Eckhardt, Fritz Gesztesy, Roger Nichols +1