61st International Symposium
on Functional Equations

June, 15-21, 2025,
Cluj-Napoca, Romania

Dedicated to the memory of Jürg Rätz
61st International Symposium on Functional Equations
June, 15-21, 2025, Cluj-Napoca, Romania
Dedicated to the memory of Jürg Rätz

List of Talks

  1. Alina Ramona BAIAS, The best Ulam constant of a first-order linear differential operator,
  2. Mihály BESSENYEI, Toader convexity revisited,
  3. Zoltán BOROS, Additional equations for monomial and polynomial mappings,
  4. Liviu CĂDARIU, The stability of a linear functional equations in a single variable using the fixed point method,
  5. Jacek CHMIELIŃSKI, Approximate orthogonality via norm derivatives in complex Banach spaces,
  6. Gian Luigi FORTI, Regular solutions of an alternative additive-quadratic equation,
  7. Roman GER, The non-existence of a Hamel-basis,
  8. Attila GILÁNYI, Bernstein–Doetsch and Sierpiński theorems for $(M, N)$-convex functions,
  9. Dorota GŁAZOWSKA, Remarks on invariance equations involving generalized classical weighted means,
  10. Chaitanya GOPALAKRISHNA, Iterative roots of multidimensional maps,
  11. Eszter GSELMANN, The compatibility of Weber's law and Iverson's law of similarity,
  12. László HORVÁTH, Refining the integral Jensen inequality for finite signed measures using majorization,
  13. Mehak IQBAL, Quadratic functions as solution of polynomial equations,
  14. Justyna JARCZYK, Complex-valued solutions of a multiplicative equation of finite order,
  15. Witold JARCZYK, On iterative roots of mean-type mappings,
  16. Delia KEREKES, On Ulam stability for operator recurrence equations,
  17. Tibor KISS, Partially affine solutions of the invariance problem of Matkowski means,
  18. Milica KLARIČIĆ BAKULA, New upper bounds for the weighted Chebyshev functional,
  19. Zbigniew LEŚNIAK, On the form of the set of irregular points for a class of Brouwer homeomorphisms,
  20. Alexandra MADUTA, Probability distributions and their entropies,
  21. Daniela MARIAN, Hyers-Ulam stability of certain partial differential equations,
  22. Gabriela MOTRONEA, Rates of convergence for positive linear operators,
  23. Constantin NICULESCU, Old and new on strongly subadditive/superadditive functions,
  24. Kazuki OKAMURA, On expectations of power means of random variables,
  25. Diana OTROCOL, Best Ulam constant of a partial differential operator,
  26. Alexandra PAICU, The best Ulam constant of a first-order linear differential operator,
  27. Zsolt PÁLES, Results and problems in the comparison theory of means,
  28. Paweł PASTECZKA, Perspectives for the mean theory: Open problems and further developments,
  29. Ioan RAŞA, Characterizations of the limits of certain sequences of positive linear operators,
  30. Patryk RELA, On supertranslativity of the Orlicz premium principle under uncertainty,
  31. Maciej SABLIK, Consistence of social indices,
  32. Alexandra SINGEORZAN, Best Ulam Constant of a partial differential operator,
  33. László SZÉKELYHIDI, Localization of ideals in the Fourier algebra,
  34. Tomasz SZOSTOK, Further results concerning the computer-assisted approach to inequalities,
  35. Lan Nhi TO, Computer-assisted investigation of types of functional equations,
  36. Norbert TÓTH, Testing non-solvability of linear programs,
  37. Péter TÓTH, Smooth solutions of the invariance problem of Matkowski means,
  38. Andrei VERNESCU, On some functional equations of function of natural argument and the convergence of the solutions,
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