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 2022-06-01 to 2026-06-01.)

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	10
Questions About Extreme Points	7
Ideal Structure of Nica-Toeplitz Algebras	7
Operators Which Preserve a Positive Definite Inner Product	5
Function theory on the annulus in the dp-norm	5
Quasi Gelfand Triples	5
Horizontal Fourier Transform of the Polyanalytic Fock Kernel	5
Relative Topological Principality and the Ideal Intersection Property for Groupoid C*-Algebras	5
Recovering the Shape of an Equilateral Quantum Tree by Two Spectra	5
$${\mathfrak {L}}$$-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
$$H^\infty $$-calculus for the Stokes operator with Hodge, Navier, and Robin boundary conditions on unbounded domains	4
Discussing Semigroup Bounds with Resolvent Estimates	4
Quasicentral Modulus and Self-similar Sets: A Supplementary Result to Voiculescu’s Work	4
On Certain Order Properties of Non Kubo–Ando Means in Operator Algebras	4
Szegő Limit Theorem for Truncated Toeplitz Operators	4
Lifting Sylvester Equations: Singular Value Decay for Non-Normal Coefficients	4
Birman–Schwinger Principles for Schrödinger Operators with Distributional Potentials Revisited	4
Translation-invariant Operators in Reproducing Kernel Hilbert Spaces	3
Denjoy–Wolff Points on the Bidisk via Models	3
Real Decomposable Maps on Operator Systems	3
On Exponential Splitting Methods for Semilinear Abstract Cauchy problems	3
Subinner-Free Outer Factorizations on an Annulus	3

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