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 2022-05-01 to 2026-05-01.)

Article	Citations
Heat Flow in Polygons with Reflecting Edges	12
Semiflows, Composition Semigroups, and the Approximation of Dirichlet-to-Neumann Semigroups	10
Dirac Operators with Infinite Mass Boundary Conditions on Unbounded Domains with Infinite Corners	8
Recovering the Shape of an Equilateral Quantum Tree by Two Spectra	7
Ideal Structure of Nica-Toeplitz Algebras	7
Quasi Gelfand Triples	5
Questions About Extreme Points	5
Horizontal Fourier Transform of the Polyanalytic Fock Kernel	5
Function theory on the annulus in the dp-norm	5
Relative Topological Principality and the Ideal Intersection Property for Groupoid C*-Algebras	4
$${\mathfrak {L}}$$-Resolvents and Pseudo-Spectral Functions of Symmetric Linear Relations in Hilbert Spaces	4
Positive and Negative Eigenfunction Expansion Results for Indefinite Sturm–Liouville Problems	4
Discussing Semigroup Bounds with Resolvent Estimates	4
Szegő Limit Theorem for Truncated Toeplitz Operators	4
Birman–Schwinger Principles for Schrödinger Operators with Distributional Potentials Revisited	4
On Certain Order Properties of Non Kubo–Ando Means in Operator Algebras	4
Operators Which Preserve a Positive Definite Inner Product	4
Quasicentral Modulus and Self-similar Sets: A Supplementary Result to Voiculescu’s Work	4
$$H^\infty $$-calculus for the Stokes operator with Hodge, Navier, and Robin boundary conditions on unbounded domains	4
Lifting Sylvester Equations: Singular Value Decay for Non-Normal Coefficients	4
Denjoy–Wolff Points on the Bidisk via Models	3
On Exponential Splitting Methods for Semilinear Abstract Cauchy problems	3
Hilbert $$C^$$-Modules with Hilbert Dual and $$C^$$-Fredholm Operators	3
Subinner-Free Outer Factorizations on an Annulus	3
Banach algebras of multiplication, Wiener-Hopf and Mellin convolution operators: Fredholmness	3

Translation-invariant Operators in Reproducing Kernel Hilbert Spaces	3
On Banach subalgebras of the Dirichlet Hardy algebra $$\mathscr {H}^\infty $$ consisting of lacunary Dirichlet series	3
Classes of Kernels and Continuity Properties of the Double Layer Potential in Hölder Spaces	2
The Heisenberg Group Action on the Siegel Domain and the Structure of Bergman Spaces	2
Solving Continuous Time Leech Problems for Rational Operator Functions	2
Traces on Operator Ideals Defined over the Class of all Banach Spaces and Related Open Problems	2
Reproducing Kernel Thesis of Hankel Operators on Weighted Hardy Spaces	2
Banach algebras of multiplication, Wiener-Hopf and Mellin convolution operators: Localization	2
Generalized Wright Analysis in Infinite Dimensions	2
Essential m-dissipativity for Possibly Degenerate Generators of Infinite-dimensional Diffusion Processes	2
Sufficient Criteria for Stabilization Properties in Banach Spaces	2
Regular Ideals, Ideal Intersections, and Quotients	2
Correction to: Volterra Type Operators Between Bloch Type Spaces and Weighted Banach Spaces	2
On the Continuity of Strongly Singular Calderón–Zygmund-Type Operators on Hardy Spaces	2
The Double-Layer Potential for Spectral Constants Revisited	2
Symmetries and Reflections from Composition Operators in the Disk	2
Weighted Cuntz–Krieger Algebras	2
Harris’ Criterion and Hardy Inequalities on Graphs	2
Reproducing Kernel Hilbert Spaces of Polyanalytic Functions of Infinite Order	2
Publisher Correction: Five Open Problems on the Dirichlet-to-Neumann Operator with Variable Coefficients	2
Five Open Problems on the Dirichlet-to-Neumann Operator with Variable Coefficients	2
The Twisted Hilbert Space Ideals	2
$$\varvec{q}$$-rational Functions and Interpolation with Complete Nevanlinna–Pick Kernels	2
Positive operator-valued noncommutative polynomials are squares	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
Large Perturbations of Nest Algebras	1
Essential Spectrum and Feller Type Properties	1
Subhomogeneous Operator Systems and Classification of Operator Systems Generated by $$\Lambda $$-Commuting Unitaries	1
Fourier Multipliers and Pseudo-differential Operators on Fock-Sobolev Spaces	1
Integral Operators on Fock–Sobolev Spaces via Multipliers on Gauss–Sobolev Spaces	1
Models of Holomorphic Functions on the Symmetrized Skew Bidisc	1
Approximation of the Spectral Action Functional in the Case of $$\tau $$-Compact Resolvents	1
On the Power Set of Quasinilpotent Operators	1
Invariant Subspaces of Idempotents on Hilbert Spaces	1
A New Systems Theory Perspective on Canonical Wiener-Hopf Factorization on the Unit Circle	1
Norms of Basic Operators in Vector Valued Model Spaces and de Branges Spaces	1
Hyperreflexivity of Von Neumann Algebras and Similarity of Finitely Generated $$C^*$$-Algebras	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
Local Spectral Multiplicity of Selfadjoint Couplings with General Interface Conditions	1
A Quantum Harmonic Analysis Approach to Segal Algebras	1
Extension Theory Via Boundary Triplets for Infinite-Dimensional Implicit Port-Hamiltonian Systems	1
Compressions of Selfadjoint and Maximal Dissipative Extensions of Non-densely Defined Symmetric Operators	1
On the Eigenvalues of Spectral Gaps of Elliptic PDEs on Waveguides	1
On Lieb–Thirring inequalities for multidimensional Schrödinger operators with complex potentials	1
On Schrödinger operators with oblique transmission conditions on non-smooth curves	1
Stability Analysis of a Simple Discretization Method for a Class of Strongly Singular Integral Equations	1
$$C^*$$-Algebras Associated to Transfer Operators for Countable-to-One Maps	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
Various form closures associated with a fixed non-semibounded self-adjoint operator	1