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 2021-08-01 to 2025-08-01.)

Article	Citations
Generalized Halpern iteration with new control conditions and its application	36
Radially symmetric solutions of a nonlinear singular elliptic equation	26
Existence of solutions and approximate controllability of second-order stochastic differential systems with Poisson jumps and finite delay	15
The Verlinde traces for $$SU_{X}(2,\xi )$$ and blow-ups	14
Multiple solutions of the Dirichlet problem in multidimensional billiard spaces	13
Symmetry and uniqueness for a hinged plate problem in a ball	12
Least energy radial sign-changing solutions for pseudo-relativistic Hartree equations in $$\mathbb {R}^N$$	11
A condition on uniform spaces for the existence of maximal elements and fixed points	10
Basic facts and naive questions	10
Positive least energy solutions for k-coupled Schrödinger system with critical exponent: the higher dimension and cooperative case	10
On dual cone theory for Euclidean Bosonic equations	10
$$C^0$$-robustness of topological entropy for geodesic flows	9
Elliptic problems with mixed nonlinearities and potentials singular at the origin and at the boundary of the domain	9
Classification, non-degeneracy and existence of solutions to nonlinear Choquard equations	9
Non-negative solutions of a sublinear elliptic problem	9
On an Ambrosetti–Prodi type problem in $$\mathbb {R}^N$$	7
Nontrivial p-$$k_i$$-convex radial solutions for p-$$k_i$$-Hessian systems: existence and asymptotic behavior	7
The rigid-flexible value for symplectic embeddings of four-dimensional ellipsoids into polydiscs	7
Uniqueness of local solutions to the Boltzmann equation	7
Correction to: On curves with the Poritsky property	7
On weakly exact Lagrangians in Liouville bi-fillings	7
Well-posedness of the Boussinesq systems on whole line time-axis and on weighted spaces	7
Nielsen numbers of affine n-valued maps on nilmanifolds	7
Normalized solutions to the Chern–Simons–Schrödinger system: the supercritical case	6
Existence of normalized positive solution of nonhomogeneous biharmonic Schrödinger equations: mass-supercritical case	6

Most continuous and increasing functions on a compact real interval have infinitely many different fixed points	6
Invariant measures for place-dependent idempotent iterated function systems	6
On self-maps of complex flag manifolds	6
Single peak solutions for an elliptic system of FitzHugh–Nagumo type	6
Applications of the Banach fixed-point theorem to analyze insolvency problems of an insurance company	6
Nonlocal differential equations with convex convolution coefficients	6
Periodic solutions for nonresonant parabolic equations on $${\mathbb {R}}^N$$ with Kato–Rellich type potentials	5
A Lagrangian Klein bottle you can’t squeeze	5
Ekeland variational principle on quasi-weighted graphs: improving the work–family balance	5
Volume-preserving right-handed vector fields are conformally Reeb	5
Breather solutions in conservative and dissipative nonlinear Klein–Gordon lattices	5
Combinatorial formulas for some generalized Ekeland-Hofer-Zehnder capacities of convex polytopes	5
New classes of Picard operators	4
Fixed point and surjectivity results for e-quasibounded and (mws)-compact multivalued maps and applications	4
The Anosov–Katok method and pseudo-rotations in symplectic dynamics	4
The method of lower and upper solutions for second order periodic Stieltjes differential equations	4
Syzygy sequences of the three-center problem	4
Positive solution for an elliptic system with critical exponent and logarithmic terms: the higher-dimensional cases	4
Bifurcations from degenerate orbits of solutions of nonlinear elliptic systems	4
Finite Morse index solutions of a nonlinear Schrödinger equation in half-space with nonlinear boundary value conditions	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
Correction to: Fixed point theory of cyclic operators	4
Set theoretical pathologies in the problem of Lyapunov stability of singular points of vector fields	4
Lagrangian skeleta and plane curve singularities	3
An algebraic approach to the algebraic Weinstein conjecture	3
The higher integrability of weak solutions of critical Choquard parabolic equations	3
Higher symplectic capacities and the stabilized embedding problem for integral ellipsoids	3
A fixed point theorem and Ulam stability of a general linear functional equation in random normed spaces	3
Comments on the cosmic convergence of nonexpansive maps	3
On a symplectic generalization of a Hirzebruch problem	3
Multiple normalized solutions to Schrödinger equations in $$\mathbb {R}^N$$ with critical growth and potential	3
Correction to: Multi-step inertial Krasnosel’skiǐ–Mann iteration with new inertial parameters arrays	3
Vũ Ngọc’s conjecture on focus-focus singular fibers with multiple pinched points	3
Periods of Morse–Smale diffeomorphisms on $${\mathbb {S}}^n$$, $${\mathbb {S}}^m \times {\mathbb {S}}^n$$, $${\mathbb {C}}{\mathbf{P }}^n$$ and $${\mathbb {H}}{\mathbf{P }}^n$$	3
Periodic points of mappings contracting total pairwise distances	3
Laminar flow in channels with porous walls: advancing the existence, uniqueness and approximation of solutions via fixed point approaches	3
Multiplicity of normalized solutions for dipolar Gross-Pitaevskii equation with a mass subcritical perturbation	3
A Poincaré–Birkhoff theorem for multivalued successor maps with applications to periodic superlinear Hamiltonian systems	3
Stabilization in dipolar Gross–Pitaevskii theory by mass-subcritical perturbation	3
Non-potential systems with relativistic operators and maximal monotone boundary conditions	3
On the periodic structure of $$C^1$$ self-maps on the product of spheres of different dimensions	3
Existence of invariant idempotent measures by contractivity of idempotent Markov operators	3
Existence and asymptotic behavior of solutions for nonhomogeneous Schrödinger–Poisson system with exponential and logarithmic nonlinearities	3
Generic hyperbolic Mañé sets have zero entropy	3
Cuplength estimates for periodic solutions of Hamiltonian particle-field systems	2
On a class of planar Schrödinger–Poisson systems with a bounded potential well	2
Symmetry and monotonicity of positive solutions for a Choquard equation involving the logarithmic Laplacian operator	2
Beyond Cauchy–Kowalewsky: a Picard–Lindelöf theorem for smooth PDE	2
Abstract analysis for a coupled system of evolution equations via topological approach	2

Concepts of almost periodicity and ergodic theorems in locally convex spaces	2
A generalization of the Goebel–Kirk fixed point theorem for asymptotically nonexpansive mappings	2
Non-variational radial solutions to a singular elliptic Dirichlet problem on the disk with Leray potential	2
On the Nielsen root theory of n-valued maps	2
Global structure of positive solutions for a Neumann problem with indefinite weight in Minkowski space	2
Existence and convergence of solutions for p-Laplacian systems with homogeneous nonlinearities on graphs	2
Pohožaev method and nontrivial ground state solutions for a class of quasilinear Schrödinger system	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
Dedication	2
A set-valued approach for quasi-variational–hemivariational inequality systems	2
Existence of positive solutions for one dimensional Minkowski curvature problem with singularity	2
Global bifurcation of non-radial solutions for symmetric sub-linear elliptic systems on the planar unit disc	2
Existence of mild solutions for impulsive evolution equation with nonlocal condition	2
On fixed points of locally and pointwise contractive set-valued maps with an application to the existence of Nash equilibrium in games	2
Hutchings’ inequality for the Calabi invariant revisited with an application to pseudo-rotations	2
Orientability through the algebraic multiplicity	2
Existence and nonuniqueness of solutions for a class of asymptotically linear nonperiodic Schrödinger equations	2
Simple closed geodesics in dimensions $$\ge 3$$	2
Diffeomorphism type via aperiodicity in Reeb dynamics	2
Quantum cohomology as a deformation of symplectic cohomology	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
Existence and uniqueness of solution for neutral differential equations with state- dependent delay	2
Polytope Novikov homology	2
Existence and multiplicity results for a system involving an anisotropic $$({\mathop {p}\limits ^{\rightarrow }},{\mathop {q}\limits ^{\rightarrow }})$$-Laplacian type operator	2
Lefschetz integral in finite spaces and its applications	2