Aequationes Mathematicae

Article	Citations
Hyers-Ulam stability of a general linear partial differential equation	54
A note on the four color theorem	30
n-gon centers and central lines	25
Non-existence of measurable solutions of certain functional equations via probabilistic approaches	16
On a combinatorial identity of Gavrea and Ivan and related results	9
Balanced Stirling numbers	7
Packing squares into a rectangle with a relatively small area	7
Equalities for mixed operations of Moore–Penrose and group inverses of a matrix	6
Casting light on integer compositions	6
Recent progress on minimal hypersurfaces with cylindrical tangent cones	5
Orthogonality induced by norm derivatives: a new geometric constant and symmetry	5
A generalization of the cosine addition law on semigroups	5
The number of independent sets in bipartite graphs and benzenoids	4
A divided-difference characterization of polynomials over finite fields of characteristic two	4
Bases consisting of self-referential functions in Banach spaces	4
Global forcing number for maximal matchings in corona products	4
Regularity properties of k-Brjuno and Wilton functions	4
Continuous dependence of the weak limit of iterates of some random-valued vector functions	4
Common positive solutions for two non-linear matrix equations using fixed point results in b-metric-like spaces	4
A class of functional equations for additive functions	4
Continuous selections and collectively fixed point theory with applications to generalized games	4
On linear functional equations modulo $${\mathbb {Z}}$$	4
Further results on positively homogeneous subadditive functions by using Csiszár f-divergence	4
Vector-valued invariant means	4
Regular polygons on isochordal-viewed hedgehogs	4

Correction to: There is at most one continuous invariant mean	4
The singular evolutoids set and the extended evolutoids front	4
Means, Milne’s inequality, and quadrilateral area	3
Characterization of affine differences and related forms	3
Matrix inequalities between $$f(A)\sigma f(B)$$ and $$A\sigma B$$	3
Adjacencies for recognition of digital Jordan surfaces	3
Homogeneity of isosceles orthogonality, transitivity of the norm, and characterizations of inner product spaces	3
A generalization of the Kannappan-sine addition law on semigroups	3
Dimension preserving approximation	3
On q-generalized (r, s)-Stirling numbers	3
Regular solutions of a functional equation derived from the invariance problem of Matkowski means	3
Extreme area and perimeter bisectors in a triangle	3
Functional equations stemming from ‘scientific laws’	3
On metric stability of set-valued subadditive functions	2
Skew Dyck paths with air pockets	2
A study on Davison’s functional equation for set-valued functions	2
The solvability cardinal of the class of polynomials	2
An Application of Viscosity Approximation Type Iterative Method in the Generation of Mandelbrot and Julia Fractals	2
Uniformly-like convex solutions for the polynomial-like iterative equation in Banach spaces	2
Linear functional equations and their solutions in generalized Orlicz spaces	2
Explicit forms of invariant means: complementary results to Gauss $$\left( {\mathcal {A}},{\mathcal {G}}\right) $$-theorem and some applications	2
Characterizations of weighted generalized inverses	2
Some investigations on the U-partial order induced by uninorms	2
A Kannappan-sine subtraction law on semigroups	2
Fejér type inequalities for higher order convex functions and quadrature formulae	2
On digital sequences associated with Pascal’s triangle	2
Sparse groups need not be semisparse	2
New generalizations of Steffensen’s inequality by Lidstone’s polynomial	2
Operators with a non-trivial closed invariant affine subspace	2
A new equation related to two-sided centralizers in prime rings	2
On iterative roots of injective functions	2
A note on homotopy extension KKM type maps	2
Stability of $$\varepsilon $$-isometries and their symmetrizations on the positive cones of $$c_0$$	2
A characterization of the Euclidean ball via antipodal points	2
Bisector fields and pencils of conics	2
Pexider invariance equation for embeddable mean-type mappings	2
Some new minimax inequalities for centered convex bodies	2
Odd strength spherical designs attaining the Fazekas–Levenshtein bound for covering and universal minima of potentials	2
A classification of non-monotonicity height for piecewise monotone functions (I): increasing case	2
Extending EP matrices by means of recent generalized inverses	2
Randomly r-orthogonal factorizations in bipartite graphs	2
A functional equation related to Wigner’s theorem	2
László Székelyhidi	2
General hyperstability criteria for Jensen-type equations	2
Angular structure of equiangular cones in Euclidean spaces	2
Kadec-Klee property in Musielak-Orlicz function spaces equipped with the Orlicz norm	2
When are maps preserving semi-inner products linear?	1
Quadratic functions fulfilling an additional condition along the hyperbola $$\pmb {xy = 1} $$	1
On and around the balanced Cauchy equation	1
On Cesàro triangles and spherical polygons	1

On the maximal part in unrefinable partitions of triangular numbers	1
K-subadditive and K-superadditive set-valued functions bounded on “large” sets	1
Proof of a conjecture due to Chu on Gosper-type sums	1
Prefixes of bargraph paths	1
Set-valued solutions of a two-variable functional equation with involutions	1
Refining the Hermite-Hadamard inequalities for operator convex maps in multiple operator variables	1
Extensions of the sine addition law with an extra term	1
On the functional equation $$\hbox {f}(\hbox {x}+\hbox {y})=\hbox {g}(\hbox {xy})$$	1
Vector valued invariant means, complementability and almost constrained subspaces	1
Sorting 1-away permutations with underlying Fibonacci convolutions	1
Note on the variance of generalized random polygons	1
Some sufficient conditions for path-factor uniform graphs	1
Characterizing spanning trees via the size or the spectral radius of graphs	1
The Artin-Hasse series and Laguerre polynomials modulo a prime	1
On the solvability of the (SSIE) with operator $${D}_{x} {\mathbf { * }}\left( { s}_{ R}^{{\textbf{0}}} \right) _{{{{\Sigma }} - {\lambda I}}} {{ \subset }}{ s}_{ R}^{{{0}}} $$, involving the fine spe	1
Overpartitions in terms of 2-adic valuation	1
Exponential semi-polynomials and their characterization on semigroups	1
Some characterizations of the disc by properties of isoptic triangles	1
Some study of the approximate Birkhoff orthogonality and orthogonality of bounded linear operators	1
Quaternion-valued multiplicative functions on semigroups	1
Another approach to K-subadditivity	1
Hyers-Ulam stability of an  iterative  equation  for  strictly increasing continuous functions	1
Maker-Breaker resolving game played on corona products of graphs	1
On isoptics and isochordal-viewed curves	1
Mathematical models of functional extreme leaning machins: operator-algebraic and free-probabilistic approaches	1
On strongly m-convex stochastic processes	1
On the equality problem of two-variable Bajraktarević means under first-order differentiability assumptions	1
Zero utility principles coinciding on binary risks	1
Complementary means with respect to a nonsymmetric invariant mean	1
Angular structure of Reuleaux cones	1
Clique trees with a given zero forcing number maximizing the $$A_\alpha $$-spectral radius	1
Some remarks on the stability of the Cauchy equation and completeness	1
Isometry groups of six-dimensional nilmanifolds	1
Alienation of Drygas’, Cauchy’s, Jensen’s and the quadratic equations on semigroups with an involutive automorphism	1
About Sobolev spaces on fractals: fractal gradians and Laplacians	1
On the critical exponents of generalized ballot sequences in three dimensions and large tandem walks	1
The minmin coalition number in graphs	1
Axiomatic characterization of the $$\chi ^{2}$$ dissimilarity measure	1
On evolutes of curves in the isotropic plane	1
The monomial functional equation for connected Lie groups	1
On polyhedral graphs and their complements	1
Functional equations and martingales	1
Refinements of Jensen’s inequality by uniformly convex functions	1
On distance spectral radius of graphs with given number of pendant paths of fixed length	1
Characterization of the Bernoulli polynomials via the Raabe functional equation	1
On composition and Right Distributive Law for formal power series of multiple variables	1
On an alternative additive-quadratic functional equation	1
On surface of Apollonius of two ellipsoids	1
On the Li–Zheng theorem	1
On monohedral tilings of a regular polygon	1
On Jensen’s inequality involving divided differences of convex functions	1
Sections in functional equations: stability and hyperstability	1
Sections and projections of nested convex bodies	1
Elephant polynomials	1
On some classes of multiplicative functions	1
Set-valued dynamics related to convex-valued m-mappings	1
Entropy results for Levinson-type inequalities via Green functions and Hermite interpolating polynomial	1
Points of monotonicity in F-normed Orlicz function spaces	1
A generalization of a theorem of von Neumann	1
On symmetrized stochastic convexity and the inequalities of Hermite–Hadamard type	0
A note on iterated maps of the unit sphere	0
General criteria for hyperstability of Cauchy-type equations	0
Position of the centroid of a planar convex body	0
Extensions of recent combinatorial refinements of discrete and integral Jensen inequalities	0
Generalizing the concept of bounded variation	0
Reduction formulas for higher order derivations and a hypergeometric identity	0
Some moduli related to $$\rho _{\pm }$$-orthogonalities and semi-orthogonality in Banach spaces	0
Continuous selecting families and collectively fixed point theory	0
Invariant affine subspaces	0
Area computation for triangular area or perimeter bisecting deltoids	0
Characterizations of derivations on spaces of smooth functions	0
Correction to: Regularity properties of k-Brjuno and Wilton functions	0
Solutions of the functional difference Toda equation from centered Darboux transformation	0
Properties of Motzkin triangle and t-generalized Motzkin sequences	0
A survey on measures of noncompactness with some applications in infinite systems of differential equations	0
Vortex filament flows for curves in a 3-dimensional pseudo-Riemannian manifold	0
Semi-classical 2-dimensional Minkowski planes	0
A characterization of generalized multinomial coefficients related to the entropic chain rule	0
On curves with circles as their isoptics	0
On measure of noncompactness in Lebesgue and Sobolev spaces with an application to the functional integro-differential equation	0

Systems of functional equations and generalizations of certain functions	0
A generalization of Bohr–Mollerup’s theorem for higher order convex functions: a tutorial	0
Minimal codewords in Norm-Trace codes	0
Radon and Carathéodory type theorems for staircase convexity	0
Curves that allow the motion of a regular polygon	0
A Tverberg type theorem for staircase convexity	0
An alternative equation for generalized monomials	0
Quasi-Cauchy quotients and means	0
On quadrature means	0
Conditional distributivity for semi-t-operators over uninorms	0
Coincidence theory for lower semicontinuous type maps with decomposable values	0
A Pexider equation containing the aritmetic mean	0
Basic sets for some basic functional equations	0
On multiplicative functions which are additive on positive cubes	0
Limit theorems for Bajraktarević and Cauchy quotient means of independent identically distributed random variables	0
When a word in Riordan involutions is a Riordan involution?	0
On the state of the second part of Hilbert’s fifth problem	0
Twisted coefficients on coarse spaces and their corona	0
On spectral irregularity of graphs	0
New constructions of t-norms and t-conorms on bounded lattices	0
An analogue of a theorem of Steinitz for ball polyhedra in $$\mathbb {R}^3$$	0
Rigidity of hypersurfaces and Moser–Bernstein type results in certain warped products, with applications to pseudo-hyperbolic spaces	0
On a generalized notion of metrics	0
Levin–Cochran–Lee inequalities and best constants on homogeneous groups	0
Alienation and stability of Jensen’s and other functional equations	0
Weighted Ingham-type inequalities via the positivity of quadratic polynomials	0
On forward-order law for core inverse in rings	0
On graceful antimagic graphs	0
Metric symmetry and distance distribution functions on graphs	0
An upper bound of the density for packing of congruent hyperballs in hyperbolic $$3-$$space	0
$$\varepsilon $$-isometries in $$l^n_1$$	0
Three inequalities that characterize the exponential function	0
Spectra for upper triangular linear relation matrices through local spectral theory	0
Deviation from equidistance for one-dimensional sequences	0
Bernoulli numbers with level 2	0
On even orthogonally additive mappings in orthogonality spaces	0
Plenty of hyperbolicity on a class of linear homogeneous jerk differential equations	0
Vector-valued Banach limits and the linear span property	0
Iteration of a class of multi-plateau mappings	0
Paired-domination game played on paths	0
Independent transversal domination in trees, products and under local changes to a graph	0
The Goldie Equation: III. Homomorphisms from functional equations	0
All solutions to a Schröder type functional equation	0
The 58th International Symposium on Functional Equations Bilesdungshaus Grillhof, Innsbruck (Austria), June 19–26, 2022 Dedicated to the memory of János Aczél, founder of the Symposia	0
Using Aichinger’s equation to characterize polynomial functions	0
Cauchy product of iterative functional equation	0
On some operator functional equations related to evaluation functionals and weighted composition operators on function spaces	0
Monomial functions, normal polynomials and polynomial equations	0
Rotation number of 2-interval piecewise affine maps	0
Iterative roots of PM functions extended from the characteristic interval	0
On symbolic computation of C.P. Okeke functional equations using Python programming language	0
Partitions associated to class groups of imaginary quadratic number fields	0
On multiplicative functions additive on Goldbach-type sets	0
An explicit example of an iteration group in the ring of formal power series	0
Numerical semigroups bounded by the translation of a plane monoid	0
On a general bilinear functional equation	0
Homi-repair under iteration (I): removable and jumping cases	0
On the extremal compatible linear connection of a generalized Berwald manifold	0
Distance signless Laplacian spectral radius for the existence of path-factors in graphs	0
A note on convex solutions to an equation on open intervals	0
Volumetric bounds for intersections of congruent balls in Euclidean spaces	0
A simple proof of the rationality of Takagi-like functions	0
Correction to: On the solvability of the (SSIE) with operator $${D}_{x} {\mathbf { * }}\left( { s}_{ R}^{{\textbf{0}}} \right) _{{{{\Sigma }} - {\lambda I}}} {{ \subset }}{ s}_{ R}^{{{0}}} $$, involvi	0
On the minimality of the Winterbottom shape	0
On the Jensen convexity of quasideviation and Bajraktarević means	0
Sincov’s and other functional equations and negative interest rates	0
Quadratic ellipsoids in Minkowski geometries	0
Behavior of convex integrand at a d-apex of its Wulff shape and approximation of spherical bodies of constant width	0
Remarks on Wright-convex functions	0
Arithmetic properties for generalized cubic partitions and overpartitions modulo a prime	0
A Levi–Civita functional equation on semigroups	0
Some extremal problems for polygons in the Euclidean plane	0
A note on ideal C$$^*$$-completions and amenability	0
Moment functions and exponential monomials on commutative hypergroups	0
Characterizations of Jordan *-isomorphisms of $$C^*$$-algebras by Schatten p-norm of Kubo–Ando means	0
On restricted functional inequalities associated with quadratic functional equations	0
On optimal inequalities between three-point quadratures	0
Distributivity equations for aggregation operations with annihilator over uninorms	0
Asymptotic expansions of the Archimedean compounds	0
On when the union of two algebraic sets is algebraic	0
Iterated rascal triangles	0
Maciej Sablik	0
The 60th International Symposium on Functional Equations, Hotel Rewita, Kościelisko (Poland), June 9–15, 2024	0
Some construction approaches for t-norms and t-conorms on bounded lattices	0
Set valued pexiderized quadratic functional equation	0
Cosine subtraction laws	0
Continuous inverse ambiguous functions on Lie groups	0
Redistributing algorithms and Shannon’s Entropy	0
Convex functions and approximate Birkhoff–James orthogonality	0
On a polygonal mean value property	0
Generalized Vincze’s functional equations on any group in connection with the maximum functional equation	0
Hyers–Ulam stability of integral equations with infinite delay	0
The order structure of forts iterated by quadratic polynomials	0
Alienation of the quadratic, exponential and d’Alembert functional equations	0
On Wendel’s equality for intersections of balls	0