Janusz Matkowski

University of Zielona Góra — Poland

Mathematics · Physical Sciences

21h-index2.5kcitations261works0.42yr avg
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Research Topics

Functional Equations Stability Results(179), Optimization and Variational Analysis(54), Mathematical Inequalities and Applications(51), Iterative Methods for Nonlinear Equations(41), Nonlinear Differential Equations Analysis(32)

Publications261 total

On the Ingham–Jessen Inequality for Measure Spaces
Results in Mathematics·2025
Weakly associative functions and means - new examples and open questions
Aequationes Mathematicae·2025· 1 citedOpen Access
Invariance problems of generalized weighted classical means
Aequationes Mathematicae·2025Open Access
Weakly associative functions
Aequationes Mathematicae·2025· 1 citedOpen Access
Rational means, weak associativity of means, invariance with respect to mean-type and t-(norm,conorm) mappings and applications
Fuzzy Sets and Systems·2025· 1 cited
On simple normal structure and best proximity points in reflexive Banach space
Carpathian Journal of Mathematics·2024Open Access
Restrictive Lipschitz continuity, basis property of a real sequence, and fixed-point principle in metrically convex spaces
Journal of Fixed Point Theory and Applications·2024Open Access
Means of Cauchy’s difference type
Aequationes Mathematicae·2024
Bilinearity of the Cauchy exponential difference
Bulletin of the Polish Academy of Sciences Mathematics·2024· 1 citedOpen Access
Explicit forms of invariant means: complementary results to Gauss $$\left( {\mathcal {A}},{\mathcal {G}}\right) $$-theorem and some applications
Aequationes Mathematicae·2023Open Access
A generalization of the Goebel–Kirk fixed point theorem for asymptotically nonexpansive mappings
Journal of Fixed Point Theory and Applications·2023· 2 citedOpen Access
On Weak Generalized Stability of Random Variables via Functional Equations
Results in Mathematics·2023· 3 citedOpen Access
Subcommutativity of integrals and quasi-arithmetic means
arXiv (Cornell University)·2023Open Access
Means in money exchange operations
Journal of Applied Mathematics and Computational Mechanics·2023Open Access
Iterative roots of two-dimensional mappings
Proceedings of the Edinburgh Mathematical Society·2023· 1 cited
A refinement of the Browder–Göhde–Kirk fixed point theorem and some applications
Journal of Fixed Point Theory and Applications·2022· 6 citedOpen Access
Translativity of beta-type functions
Aequationes Mathematicae·2022Open Access
Generalized Classical Weighted Means, the Invariance, Complementarity and Convergence of Iterates of the Mean-Type Mappings
Results in Mathematics·2022· 3 citedOpen Access
Quasi-Cauchy quotients and means
Aequationes Mathematicae·2021· 1 citedOpen Access
Complementary means with respect to a nonsymmetric invariant mean
Aequationes Mathematicae·2021· 1 citedOpen Access
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Frequent Co-authors

Tadeusz Świątkowski(3), Andrzej S. Nowak(3), Dorota Głazowska(3), Witold Jarczyk(3), Peter Kahlig(2), Kazimierz Nikodem(2), Weinian Zhang(2), Anna Jaśkiewicz(2), Mowaffaq Hajja(1), P. S. Bullen(1), Edward Neuman(1), Slavko Simić(1), Jacek Jachymski(1), J. Mrś(1), Justyna Jarczyk(1), Karol Baron(1), Wei Zhang(1), Joachim Domsta(1), Detlef Gronau(1), J. Błasińska-Lesk(1)