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Roger Nichols
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Year
Weyl-Titchmarsh theory for Sturm-Liouville operators with distributional potentials
J Eckhardt, F Gesztesy, R Nichols, G Teschl
arXiv preprint arXiv:1208.4677, 2012
1432012
Inverse spectral theory for Sturm-Liouville operators with distributional potentials
J Eckhardt, F Gesztesy, R Nichols, G Teschl
arXiv preprint arXiv:1210.7628, 2012
412012
Supersymmetry and Schrödinger-type operators with distributional matrix-valued potentials
J Eckhardt, F Gesztesy, R Nichols, G Teschl
Journal of Spectral Theory 4 (4), 715-768, 2015
402015
On self-adjoint boundary conditions for singular Sturm–Liouville operators bounded from below
F Gesztesy, LL Littlejohn, R Nichols
Journal of Differential Equations 269 (9), 6448-6491, 2020
312020
Heat kernel bounds for elliptic partial differential operators in divergence form with Robin-type boundary conditions
F Gesztesy, M Mitrea, R Nichols
Journal d'Analyse Mathématique 122 (1), 229-287, 2014
292014
Boundary data maps and Krein's resolvent formula for Sturm-Liouville operators on a finite interval
S Clark, F Gesztesy, R Nichols, M Zinchenko
arXiv preprint arXiv:1204.3314, 2012
292012
Sturm? Liouville Operators, Their Spectral Theory, and Some Applications
F Gesztesy, R Nichols, M Zinchenko
American Mathematical Society, 2024
222024
Inverse spectral problems for Schrödinger-type operators with distributional matrix-valued potentials
J Eckhardt, F Gesztesy, R Nichols, A Sakhnovich, G Teschl
212015
Principal solutions revisited
S Clark, F Gesztesy, R Nichols
Stochastic and Infinite Dimensional Analysis, 85-117, 2016
182016
Simplicity of eigenvalues in Anderson-type models
S Naboko, R Nichols, G Stolz
Arkiv för Matematik 51 (1), 157-183, 2013
182013
The Krein–von Neumann extension revisited
G Fucci, F Gesztesy, K Kirsten, LL Littlejohn, R Nichols, J Stanfill
Applicable Analysis 101 (5), 1593-1616, 2022
162022
On stability of square root domains for non-self-adjoint operators under additive perturbations
F Gesztesy, S Hofmann, R Nichols
Mathematika 62 (1), 111-182, 2016
162016
On factorizations of analytic operator-valued functions and eigenvalue multiplicity questions
F Gesztesy, H Holden, R Nichols
Integral Equations and Operator Theory 82 (1), 61-94, 2015
142015
On the global limiting absorption principle for massless Dirac operators
A Carey, F Gesztesy, J Kaad, G Levitina, R Nichols, D Potapov, ...
Annales Henri Poincaré 19, 1993-2019, 2018
132018
Dirichlet-to-Neumann maps, abstract Weyl–Titchmarsh M-functions, and a generalized index of unbounded meromorphic operator-valued functions
J Behrndt, F Gesztesy, H Holden, R Nichols
Journal of Differential Equations 261 (6), 3551-3587, 2016
132016
Weak convergence of spectral shift functions for one‐dimensional Schrödinger operators
F Gesztesy, R Nichols
Mathematische Nachrichten 285 (14‐15), 1799-1838, 2012
132012
An abstract approach to weak convergence of spectral shift functions and applications to multi-dimensional Schrödinger operators
F Gesztesy, R Nichols
Journal of Spectral Theory 2 (3), 225-266, 2012
132012
The limiting absorption principle for massless Dirac operators, properties of spectral shift functions, and an application to the Witten index of non-Fredholm operators
A Carey, F Gesztesy, G Levitina, R Nichols, F Sukochev, D Zanin
122023
Heat kernel bounds for elliptic partial differential operators in divergence form with Robin-type boundary conditions II
F Gesztesy, M Mitrea, R Nichols, E Ouhabaz
Proceedings of the American Mathematical Society 143 (4), 1635-1649, 2015
112015
Double operator integral methods applied to continuity of spectral shift functions
AL Carey, F Gesztesy, G Levitina, R Nichols, D Potapov, F Sukochev
Journal of Spectral Theory 6 (4), 747-779, 2016
102016
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Articles 1–20