OOIR: Observatory of International Research

Papers

(The median citation count of Integral Equations and Operator Theory is 1. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-06-01 to 2025-06-01.)

Article	Citations
$$\hbox {L}^p$$ Spaces of Operator-Valued Functions	13
Coupled Domain-Boundary Variational Formulations for Hodge–Helmholtz Operators	11
The Angle Along a Curve and Range-Kernel Complementarity	10
Heat Flow in Polygons with Reflecting Edges	8
Semiflows, Composition Semigroups, and the Approximation of Dirichlet-to-Neumann Semigroups	6
A Sequence of Weighted Birman–Hardy–Rellich Inequalities with Logarithmic Refinements	5
Ideal Structure of Nica-Toeplitz Algebras	5
Operators Which Preserve a Positive Definite Inner Product	5
Questions About Extreme Points	5
Relative Topological Principality and the Ideal Intersection Property for Groupoid C*-Algebras	5
Boundary Integral Operators for the Heat Equation in Time-Dependent Domains	5
Recovering the Shape of an Equilateral Quantum Tree by Two Spectra	5
Horizontal Fourier Transform of the Polyanalytic Fock Kernel	5
Quasicentral Modulus and Self-similar Sets: A Supplementary Result to Voiculescu’s Work	4
Discussing Semigroup Bounds with Resolvent Estimates	4
Shape Holomorphy of the Calderón Projector for the Laplacian in $${\mathbb {R}}^2$$	4
Hyperrigidity of C*-Correspondences	4
Szegő Limit Theorem for Truncated Toeplitz Operators	4
Quasi Gelfand Triples	4
Positive and Negative Eigenfunction Expansion Results for Indefinite Sturm–Liouville Problems	3
Translation-invariant Operators in Reproducing Kernel Hilbert Spaces	3
The Drury–Arveson Space on the Siegel Upper Half-space and a von Neumann Type Inequality	3
A New Characterization of Carleson Measures on the Unit Ball of $${\mathbb {C}}^n$$	3
Denjoy–Wolff Points on the Bidisk via Models	3
On Exponential Splitting Methods for Semilinear Abstract Cauchy problems	3

Pusz–Woronowicz Functional Calculus and Extended Operator Convex Perspectives	3
On the Continuity of Strongly Singular Calderón–Zygmund-Type Operators on Hardy Spaces	3
On Certain Order Properties of Non Kubo–Ando Means in Operator Algebras	3
Subinner-Free Outer Factorizations on an Annulus	3
Lifting Sylvester Equations: Singular Value Decay for Non-Normal Coefficients	3
Correction to: Volterra Type Operators Between Bloch Type Spaces and Weighted Banach Spaces	3
Hilbert $$C^$$-Modules with Hilbert Dual and $$C^$$-Fredholm Operators	3
Reproducing Kernel Hilbert Spaces of Polyanalytic Functions of Infinite Order	2
The Heisenberg Group Action on the Siegel Domain and the Structure of Bergman Spaces	2
Essential m-dissipativity for Possibly Degenerate Generators of Infinite-dimensional Diffusion Processes	2
The Double-Layer Potential for Spectral Constants Revisited	2
The Twisted Hilbert Space Ideals	2
Reproducing Kernel Thesis of Hankel Operators on Weighted Hardy Spaces	2
Sufficient Criteria for Stabilization Properties in Banach Spaces	2
Reflectionless Canonical Systems, I: Arov Gauge and Right Limits	2
Atomic and Wavelet Characterization of Musielak–Orlicz Hardy Spaces for Generalized Orlicz Functions	2
Classes of Kernels and Continuity Properties of the Double Layer Potential in Hölder Spaces	2
Weighted Cuntz–Krieger Algebras	2
Solving Continuous Time Leech Problems for Rational Operator Functions	2
Decay Rate of $$\varvec{\exp (A^{-1}t)A^{-1}}$$ on a Hilbert Space and the Crank–Nicolson Scheme with Smooth Initial Data	2
Harris’ Criterion and Hardy Inequalities on Graphs	2
Cyclic Vectors, Outer Functions and Mahler Measure in Two Variables	2
Restrictions on the Existence of a Canonical System Flow Hierarchy	2
Aluthge Operator Field and Its Numerical Range and Spectral Properties	2
The Reachable Space of the Heat Equation for a Finite Rod as a Reproducing Kernel Hilbert Space	2
$$\varvec{q}$$-rational Functions and Interpolation with Complete Nevanlinna–Pick Kernels	2
Traces on Operator Ideals Defined over the Class of all Banach Spaces and Related Open Problems	2
Unbounded Bergman Projections on Weighted Spaces with Respect to Exponential Weights	2
Inclusion Theorems for the Moyal Multiplier Algebras of Generalized Gelfand–Shilov Spaces	2
Toeplitz Operators, $$\mathbb {T}^m$$-Invariance and Quasi-homogeneous Symbols	1
In Memoriam Heinz Langer (08.08.1935-25.01.2024)	1
On the Dynamics of Lipschitz Operators	1
Fourier Multipliers and Pseudo-differential Operators on Fock-Sobolev Spaces	1
Improving Semigroup Bounds with Resolvent Estimates	1
A Quantum Harmonic Analysis Approach to Segal Algebras	1
On the Eigenvalues of Spectral Gaps of Elliptic PDEs on Waveguides	1
Approximation of the Spectral Action Functional in the Case of $$\tau $$-Compact Resolvents	1
Regular Ideals, Ideal Intersections, and Quotients	1
Asymptotic Behavior of Solutions of the Dirac System with an Integrable Potential	1
Large Perturbations of Nest Algebras	1
Toeplitz Operators on the Unit Ball with Locally Integrable Symbols	1
$$\varvec{m}$$–Isometric Composition Operators on Directed Graphs with One Circuit	1
Norms of Basic Operators in Vector Valued Model Spaces and de Branges Spaces	1
Stability Analysis of a Simple Discretization Method for a Class of Strongly Singular Integral Equations	1
Correction to: Generalization of Schur’s Test and Its Application to a Class of Integral Operators on the Unit Ball of $$\mathbb {C}^n$$	1
The Agler Reducing Subspace for the Operator-Valued Inner Function Over the Bidisk	1
Some Operator Ideal Properties of Volterra Operators on Bergman and Bloch Spaces	1
Invariant Subspaces of Idempotents on Hilbert Spaces	1
Compressions of Selfadjoint and Maximal Dissipative Extensions of Non-densely Defined Symmetric Operators	1
Local Spectral Multiplicity of Selfadjoint Couplings with General Interface Conditions	1

Essential Spectrum and Feller Type Properties	1
Backward Extensions of Weighted Shifts on Directed Trees	1
Subhomogeneous Operator Systems and Classification of Operator Systems Generated by $$\Lambda $$-Commuting Unitaries	1
Limit Laws for R-diagonal Variables in a Tracial Probability Space	1
Integral Operators on Fock–Sobolev Spaces via Multipliers on Gauss–Sobolev Spaces	1
$$C^*$$-Algebras Associated to Transfer Operators for Countable-to-One Maps	1
$$L^p$$ and $$H^1$$ Boundedness of Oscillatory Singular Integral Operators with Hölder Class Kernels	1
Conditions for Discreteness of the Spectrum to Schrödinger Operator Via Non-increasing Rearrangement, Lagrangian Relaxation and Perturbations	1
Arithmetic Progressions and Chaos in Linear Dynamics	1
Mate–Nevai–Totik Theorem for Krein Systems	1
On the Power Set of Quasinilpotent Operators	1
New Properties of the Multivariable $$H^\infty $$ Functional Calculus of Sectorial Operators	1