Roger Nichols

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All published works

Action	Title	Year	Authors
+	An Extension of a Formula of F. S. Rofe-Beketov	2025	Fritz Gesztesy Roger Nichols
+	Sturm–Liouville M-functions in terms of Green's functions	2024	Fritz Gesztesy Roger Nichols
+	Strict domain monotonicity of the principal eigenvalue and a characterization of lower boundedness for the Friedrichs extension of four-coefficient Sturm-Liouville operators	2022	Fritz Gesztesy Roger Nichols
+	Weak convergence of spectral shift functions revisited	2022	Carson Connard Benjamin Ingimarson Roger Nichols Andrew Paul
+	Donoghue $m$-functions for singular Sturm--Liouville operators	2021	Fritz Gesztesy Lance L. Littlejohn Roger Nichols Mateusz Piorkowski Jonathan Stanfill
+	The Krein-von Neumann extension revisited	2021	Guglielmo Fucci Fritz Gesztesy Klaus Kirsten Lance L. Littlejohn Roger Nichols Jonathan Stanfill
+	The limiting absorption principle for massless Dirac operators, properties of spectral shift functions, and an application to the Witten index of non-Fredholm operators	2021	Alan L. Carey Fritz Gesztesy Galina Levitina Roger Nichols Fedor Sukochev Dmitriy Zanin
+	The product formula for regularized Fredholm determinants	2020	Thomas Britz Alan L. Carey Fritz Gesztesy Roger Nichols Fedor Sukochev Dmitriy Zanin
+	On self-adjoint boundary conditions for singular Sturm-Liouville operators bounded from below	2019	Fritz Gesztesy Lance L. Littlejohn Roger Nichols
+	Dirichlet-to-Neumann Maps, Abstract Weyl-Titchmarsh $M$-Functions, and a Generalized Index of Unbounded Meromorphic Operator-Valued Functions	2016	Jussi Behrndt Fritz Gesztesy Helge Holden Roger Nichols
+	Double operator integral methods applied to continuity of spectral shift functions	2015	Alan L. Carey Fritz Gesztesy Galina Levitina Roger Nichols Denis Potapov Fedor Sukochev
+	On the index of meromorphic operator-valued functions and some applications	2015	Jussi Behrndt Fritz Gesztesy Helge Holden Roger Nichols
+	Inverse Spectral Problems for Schrödinger-Type Operators with Distributional Matrix-Valued Potentials	2014	Jonathan Eckhardt Fritz Gesztesy Roger Nichols Alexander Sakhnovich Gerald Teschl
+	Principal Solutions Revisited	2014	Stephen Clark Fritz Gesztesy Roger Nichols
+	On Factorizations of Analytic Operator-Valued Functions and Eigenvalue Multiplicity Questions	2014	Fritz Gesztesy Helge Holden Roger Nichols
+	Stability of square root domains associated with elliptic systems of PDEs on nonsmooth domains	2014	Fritz Gesztesy Steve Hofmann Roger Nichols
+	A Jost-Pais-type reduction of (modified) Fredholm determinants for semi-separable operators in infinite dimensions	2014	Fritz Gesztesy Roger Nichols
+	On a problem in eigenvalue perturbation theory	2014	Fritz Gesztesy Serguei Naboko Roger Nichols
+	On square root domains for non-self-adjoint Sturm-Liouville operators	2013	Fritz Gesztesy Steve Hofmann Roger Nichols
+	Heat kernel bounds for elliptic partial differential operators in divergence form with Robin-type boundary conditions II	2013	Fritz Gesztesy Marius Mitrea Roger Nichols El Maati Ouhabaz
+	Boundary Data Maps and Krein's Resolvent Formula for Sturm-Liouville Operators on a Finite Interval	2012	Stephen Clark Fritz Gesztesy Roger Nichols Maxim Zinchenko
+	On Stability of Square Root Domains for Non-Self-Adjoint Operators Under Additive Perturbations	2012	Fritz Gesztesy Steve Hofmann Roger Nichols
+	Weak Convergence of Spectral Shift Functions for One-Dimensional Schrödinger Operators	2011	Fritz Gesztesy Roger Nichols
+	Spectral Properties of the Discrete Random Displacement Model	2010	Roger Nichols Günter Stolz

Common Coauthors

Coauthor	Papers Together
Fritz Gesztesy	22
Lance L. Littlejohn	3
Fedor Sukochev	3
Steve Hofmann	3
Alan L. Carey	3
Helge Holden	3
Dmitriy Zanin	2
Jonathan Stanfill	2
Stephen Clark	2
Galina Levitina	2
Jussi Behrndt	2
Maxim Zinchenko	1
Serguei Naboko	1
El Maati Ouhabaz	1
Carson Connard	1
Marius Mitrea	1
Jonathan Eckhardt	1
Mateusz Piorkowski	1
Alexander Sakhnovich	1
Klaus Kirsten	1
Andrew Paul	1
Günter Stolz	1
Thomas Britz	1
Benjamin Ingimarson	1
Gerald Teschl	1
Denis Potapov	1
Guglielmo Fucci	1

Commonly Cited References

Action	Title	Year	Authors	# of times referenced
+	Sturm‐Liouville Theory	2006	James J. Kelly	1
+	Spectral Theory and Differential Operators	2018	D. E. Edmunds Des Evans	1
+ PDF Chat	Perturbation Theory for Linear Operators	1995	Tosio Kato	1
+	Linear operators. Part II. Spectral theory	2003	Nelson Dunford Jacob T. Schwartz	1
+ PDF Chat	Uniqueness theorems in inverse spectral theory for one-dimensional Schrödinger operators	1996	Fritz Gesztesy Barry Simon	1
+ PDF Chat	On spectral theory for Schrödinger operators with strongly singular potentials	2006	Fritz Gesztesy Maxim Zinchenko	1
+	Halbbeschr�nkte gew�hnliche Differentialoperatoren zweiter Ordnung	1950	Franz Rellich	1
+	A Characterization of the Friedrichs Extension of Sturm-Liouville Operators	1978	Hubert Kalf	1
+ PDF Chat	Singularly perturbed self-adjoint operators in scales of Hilbert spaces	2007	Sergio Albeverio S. Kuzhel Л. П. Нижник	1
+	Die zul�ssigen Randbedingrungen bei den singul�ren Eingenwertproblemen der mathematischen Physik	1943	Franz Rellich	1
+	Singular Sturm-Liouville Problems: The Friedrichs Extension and Comparison of Eigenvalues	1992	Heinz‐Dieter Niessen Anton Zettl	1
+ PDF Chat	Singular quadratic functionals	1936	Marston Morse Walter Leighton	1
+	A New Characterization of the Friedrichs Extension of Semibounded Sturm-Liouville Operators	1985	R. F. Rosenberger	1
+ PDF Chat	Espaces d'interpolation et domaines de puissances fractionnaires d'op\'erateurs	1962	Par J. L. LIONS	1
+ PDF Chat	Boundary Data Maps for Schrödinger Operators on a Compact Interval	2010	Stephen Clark Fritz Gesztesy Marius Mitrea	1
+	On the Assignment of Asymptotic Values for the Solutions of Linear Differential Equations of Second Order	1955	Philip Hartman Aurel Wintner	1
+ PDF Chat	Stochastic and Infinite Dimensional Analysis	2016	Christopher C. Bernido M. Victoria Carpio-Bernido Martin Grothaus Tobias Kuna Maria João Oliveira José Luίs da Silva	1
+	Operator Theory in Harmonic and Non-commutative Analysis	2014	Joseph A. Ball Michael A. Dritschel A. F. M. ter Elst Pierre Portal Denis Potapov	1
+	Theory of Ordinary Differential Equations	1996		1
+	The Method of Rigged Spaces in Singular Perturbation Theory of Self-Adjoint Operators	2016	V. D. Koshmanenko Mykola Dudkin	1
+ PDF Chat	Boundary data maps and Krein's resolvent formula for Sturm-Liouville operators on a finite interval	2014	Stephen Clark Fritz Gesztesy Roger Nichols Maxim Zinchenko	1
+ PDF Chat	Boundary Value Problems, Weyl Functions, and Differential Operators	2020	Jussi Behrndt Seppo Hassi Henk de Snoo	1
+	On self-adjoint boundary conditions for singular Sturm–Liouville operators bounded from below	2020	Fritz Gesztesy Lance L. Littlejohn Roger Nichols	1
+	Expansions in Eigenfunctions of Selfadjoint Operators	1968	Ju. M. Berezanskiĭ	1
+ PDF Chat	Donoghue 𝑚-functions for Singular Sturm–Liouville operators	2024	Fritz Gesztesy Lance L. Littlejohn R NICHOLS Michał Piórkowski Jonathan Stanfill	1
+	Self-adjoint operators	1976		1
+	Ordinary Differential Equations	2003	Zdzisław Denkowski Stanisław Migórski Nikolas S. Papageorgiou	1
+ PDF Chat	Self-Adjoint Operators	1975	William G. Faris	1
+	Linear Operators in Hilbert Spaces	1980	Joachim Weidmann	1
+	Sturm–Liouville Operators, Their Spectral Theory, and Some Applications	2024	Fritz Gesztesy Roger L. Nichols Maxim Zinchenko	1