OOIR: Observatory of International Research

Papers

(The TQCC of Constructive Approximation is 2. 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
Asymptotics of k-nearest Neighbor Riesz Energies	81
Estimates for the Largest Critical Value of $$T_n^{(k)}$$	27
Greedy Expansions with Prescribed Coefficients in Hilbert Spaces for Special Classes of Dictionaries	23
Strong Asymptotic of Cauchy Biorthogonal Polynomials and Orthogonal Polynomials with Varying Measure	10
Duality and Difference Operators for Matrix Valued Discrete Polynomials on the Nonnegative Integers	9
Approximation of Wave Packets on the Real Line	9
Extending the Meijer G-Function	8
Sparse Estimation: An MMSE Approach	8
Fourier Interpolation with Zeros of Zeta and L-Functions	8
Sharp Constants of Approximation Theory: VI. Weighted Polynomial Inequalities of Different Metrics on the Multidimensional Cube and Ball	8
Gaussian Bounds for the Heat Kernel Associated to Prolate Spheroidal Wave Functions with Applications	7
Correction to: Jost Asymptotics for Matrix Orthogonal Polynomials on the Real Line	7
Optimal Recovery from Inaccurate Data in Hilbert Spaces: Regularize, But What of the Parameter?	7
Sobolev-Type Embeddings for Neural Network Approximation Spaces	6
An Extremal Problem for the Bergman Kernel of Orthogonal Polynomials	6
Analysis of a Stabilised Finite Element Method for Power-Law Fluids	5
Compositional Sparsity, Approximation Classes, and Parametric Transport Equations	5
Graph Recovery from Incomplete Moment Information	5
Riesz Energy Problems with External Fields and Related Theory	5
Adapted Variable Density Subsampling for Compressed Sensing	5
Sharp Bernstein Inequalities on Simplex	4
Multivariate Generalized Hermite Subdivision Schemes	4
Optimal Approximation of Zonoids and Uniform Approximation by Shallow Neural Networks	4
Bounding Zolotarev Numbers Using Faber Rational Functions	4
Iterated Function Systems Enriched with Symmetry	4

On the Log-Concavity of the Wright Function	4
Asymptotic Behaviours of q-orthogonal Polynomials from a q-Riemann Hilbert Problem	3
Dual Smale’s Mean Value Conjecture for $$n=7$$	3
Extension Operators for Some Ultraholomorphic Classes Defined by Sequences of Rapid Growth	3
Large-Degree Asymptotics of Rational Painlevé-IV Solutions by the Isomonodromy Method	3
Non-polynomial q-Askey Scheme: Integral Representations, Eigenfunction Properties, and Polynomial Limits	3
Maximal Convergence and Interpolation on Unconnected Sets	3
Orthogonal Polynomials with Periodically Modulated Recurrence Coefficients in the Jordan Block Case II	3
Approximation Theory of Tree Tensor Networks: Tensorized Univariate Functions	2
Sparse Approximation of Triangular Transports, Part I: The Finite-Dimensional Case	2
Bounds on Orthonormal Polynomials for Restricted Measures	2
Polynomial Approximation on $$C^2$$-Domains	2
Which Spaces can be Embedded in Reproducing Kernel Hilbert Spaces?	2
Singular Value Perturbation and Deep Network Optimization	2
Characterization of the Variation Spaces Corresponding to Shallow Neural Networks	2
Recovery of Regular Ridge Functions on the Ball	2
Universal Sampling Discretization	2
Polynomial Approximation of Piecewise Analytic Functions on Quasi-Smooth Arcs	2
Construction of Nonlinear Approximation Schemes for Piecewise Smooth Data	2
Wall Polynomials on the Real Line: A Classical Approach to OPRL Khrushchev’s Formula	2
On the Fourier Coefficients of Powers of a Blaschke Factor and Strongly Annular Functions	2
Approximation with One-Bit Polynomials in Bernstein Form	2
Shrinking Schauder Frames and Their Associated Bases	2
Optimal Sampling and Christoffel Functions on General Domains	2
Injectivity, Stability, and Positive Definiteness of Max Filtering	2
Recurrence Relations of Exceptional Laurent Biorthogonal Polynomials	2
Monotone Discretization of Anisotropic Differential Operators Using Voronoi’s First Reduction	2
Wavelet Characterization of Local Muckenhoupt Weighted Sobolev Spaces with Variable Exponents	2
Computation of Power Law Equilibrium Measures on Balls of Arbitrary Dimension	2
Metric Approximation of Set-Valued Functions of Bounded Variation by Integral Operators	2
The Complete Asymptotic Evaluation for Mellin Convolution Operators	2
Correction: Non-Self-Adjoint Toeplitz Matrices Whose Principal Submatrices Have Real Spectrum	2