OOIR: Observatory of International Research

Papers

(The TQCC of Journal of Fixed Point Theory and Applications 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 2021-11-01 to 2025-11-01.)

Article	Citations
Generalized Halpern iteration with new control conditions and its application	37
Radially symmetric solutions of a nonlinear singular elliptic equation	19
Symmetry and uniqueness for a hinged plate problem in a ball	14
Existence of solutions and approximate controllability of second-order stochastic differential systems with Poisson jumps and finite delay	14
Least energy radial sign-changing solutions for pseudo-relativistic Hartree equations in $$\mathbb {R}^N$$	13
The Verlinde traces for $$SU_{X}(2,\xi )$$ and blow-ups	13
On dual cone theory for Euclidean Bosonic equations	11
Positive least energy solutions for k-coupled Schrödinger system with critical exponent: the higher dimension and cooperative case	10
Multiple solutions of the Dirichlet problem in multidimensional billiard spaces	9
Surgery operations on Anosov flows via contact geometry: a survey	9
The unique positive radial solution for a class of k-Hessian equation with a negative augmented term	8
A condition on uniform spaces for the existence of maximal elements and fixed points	8
Nontrivial p-$$k_i$$-convex radial solutions for p-$$k_i$$-Hessian systems: existence and asymptotic behavior	8
Basic facts and naive questions	8
Nielsen numbers of affine n-valued maps on nilmanifolds	7
Non-negative solutions of a sublinear elliptic problem	7
Correction to: On curves with the Poritsky property	7
Nonlinear $$r(\zeta )$$-Laplacian-like problem with two nonlocal terms and without Ambrosetti–Rabinowitz condition on compact Riemannian manifolds	7
On weakly exact Lagrangians in Liouville bi-fillings	7
Elliptic problems with mixed nonlinearities and potentials singular at the origin and at the boundary of the domain	7
Normalized solutions for INLS equation with critical Hardy–Sobolev type nonlinearities	7
On an Ambrosetti–Prodi type problem in $$\mathbb {R}^N$$	6
Classification, non-degeneracy and existence of solutions to nonlinear Choquard equations	6
On self-maps of complex flag manifolds	6
Well-posedness of the Boussinesq systems on whole line time-axis and on weighted spaces	6

$$C^0$$-robustness of topological entropy for geodesic flows	6
Uniqueness of local solutions to the Boltzmann equation	6
Applications of the Banach fixed-point theorem to analyze insolvency problems of an insurance company	5
The rigid-flexible value for symplectic embeddings of four-dimensional ellipsoids into polydiscs	5
Nonlocal differential equations with convex convolution coefficients	5
Existence of normalized positive solution of nonhomogeneous biharmonic Schrödinger equations: mass-supercritical case	5
Single peak solutions for an elliptic system of FitzHugh–Nagumo type	5
Normalized solutions to the Chern–Simons–Schrödinger system: the supercritical case	5
Invariant measures for place-dependent idempotent iterated function systems	5
A Lagrangian Klein bottle you can’t squeeze	4
Ekeland variational principle on quasi-weighted graphs: improving the work–family balance	4
Volume-preserving right-handed vector fields are conformally Reeb	4
The existence of $$S^1\times C_p$$-maps between representation spheres and its applications	4
Three shrinking projection methods with multiple inertial effects for solving a class of split feasibility problems	4
Positive solution for an elliptic system with critical exponent and logarithmic terms: the higher-dimensional cases	4
Most continuous and increasing functions on a compact real interval have infinitely many different fixed points	4
Syzygy sequences of the three-center problem	4
Breather solutions in conservative and dissipative nonlinear Klein–Gordon lattices	4
New classes of Picard operators	4
Quadratic systems with two invariant real straight lines and an invariant ellipse	3
Stabilization in dipolar Gross–Pitaevskii theory by mass-subcritical perturbation	3
Laminar flow in channels with porous walls: advancing the existence, uniqueness and approximation of solutions via fixed point approaches	3
The method of lower and upper solutions for second order periodic Stieltjes differential equations	3
Finite Morse index solutions of a nonlinear Schrödinger equation in half-space with nonlinear boundary value conditions	3
Existence and asymptotic behavior of solutions for nonhomogeneous Schrödinger–Poisson system with exponential and logarithmic nonlinearities	3
Multiplicity of normalized solutions for dipolar Gross-Pitaevskii equation with a mass subcritical perturbation	3
Periodic points of mappings contracting total pairwise distances	3
Multiple normalized solutions to Schrödinger equations in $$\mathbb {R}^N$$ with critical growth and potential	3
The Anosov–Katok method and pseudo-rotations in symplectic dynamics	3
Bifurcations from degenerate orbits of solutions of nonlinear elliptic systems	3
Generic hyperbolic Mañé sets have zero entropy	3
A fixed point theorem and Ulam stability of a general linear functional equation in random normed spaces	3
On a symplectic generalization of a Hirzebruch problem	3
A Poincaré–Birkhoff theorem for multivalued successor maps with applications to periodic superlinear Hamiltonian systems	3
Correction to: Fixed point theory of cyclic operators	3
Set theoretical pathologies in the problem of Lyapunov stability of singular points of vector fields	3
Fixed point and surjectivity results for e-quasibounded and (mws)-compact multivalued maps and applications	3
Existence of invariant idempotent measures by contractivity of idempotent Markov operators	3
Lagrangian skeleta and plane curve singularities	2
Non-variational radial solutions to a singular elliptic Dirichlet problem on the disk with Leray potential	2
Simple closed geodesics in dimensions $$\ge 3$$	2
On a class of planar Schrödinger–Poisson systems with a bounded potential well	2
A set-valued approach for quasi-variational–hemivariational inequality systems	2
Abstract analysis for a coupled system of evolution equations via topological approach	2
Pohožaev method and nontrivial ground state solutions for a class of quasilinear Schrödinger system	2
On the periodic structure of $$C^1$$ self-maps on the product of spheres of different dimensions	2
Lefschetz integral in finite spaces and its applications	2
Symmetry and monotonicity of positive solutions for a Choquard equation involving the logarithmic Laplacian operator	2
Vũ Ngọc’s conjecture on focus-focus singular fibers with multiple pinched points	2
Existence of mild solutions for impulsive evolution equation with nonlocal condition	2

Cuplength estimates for periodic solutions of Hamiltonian particle-field systems	2
Variational structures for infinite transition orbits of monotone twist maps	2
A generalization of the Goebel–Kirk fixed point theorem for asymptotically nonexpansive mappings	2
Existence of positive solutions for one dimensional Minkowski curvature problem with singularity	2
On fixed points of locally and pointwise contractive set-valued maps with an application to the existence of Nash equilibrium in games	2
Diffeomorphism type via aperiodicity in Reeb dynamics	2
Global bifurcation of non-radial solutions for symmetric sub-linear elliptic systems on the planar unit disc	2
Periods of Morse–Smale diffeomorphisms on $${\mathbb {S}}^n$$, $${\mathbb {S}}^m \times {\mathbb {S}}^n$$, $${\mathbb {C}}{\mathbf{P }}^n$$ and $${\mathbb {H}}{\mathbf{P }}^n$$	2
Beyond Cauchy–Kowalewsky: a Picard–Lindelöf theorem for smooth PDE	2
Existence and multiplicity results for a system involving an anisotropic $$({\mathop {p}\limits ^{\rightarrow }},{\mathop {q}\limits ^{\rightarrow }})$$-Laplacian type operator	2
The higher integrability of weak solutions of critical Choquard parabolic equations	2
An algebraic approach to the algebraic Weinstein conjecture	2
Existence and nonuniqueness of solutions for a class of asymptotically linear nonperiodic Schrödinger equations	2
On the convergence of solutions to an incomplete Cauchy problem governed by a quasi-convex function and a quasi-nonexpansive operator	2
A Smörgåsbord of (bi)contact structures, Reeb flows and pseudo-Anosov flows	2
Existence and multiplicity of positive periodic solutions to a class of Liénard equations with repulsive singularities	2
Properties of the minimizers for a constrained minimization problem arising in fractional NLS system	2
Global structure of positive solutions for a Neumann problem with indefinite weight in Minkowski space	2
Non-potential systems with relativistic operators and maximal monotone boundary conditions	2
Hutchings’ inequality for the Calabi invariant revisited with an application to pseudo-rotations	2
Concepts of almost periodicity and ergodic theorems in locally convex spaces	2
Orientability through the algebraic multiplicity	2
Higher symplectic capacities and the stabilized embedding problem for integral ellipsoids	2
Existence and convergence of solutions for p-Laplacian systems with homogeneous nonlinearities on graphs	2