1. Karol Baron: a little bit about him on his 70th birthday

   • Witold Jarczyk
   • Janusz Morawiec

   OriginalPaper Open access 04 March 2019 Pages: 1 - 8

2. On the special form of integral convolution type inequality due to Walter and Weckesser

   • Tomasz Małolepszy
   • Janusz Matkowski

   OriginalPaper Open access 30 June 2018 Pages: 9 - 19

3. Means of iterates

   • Szymon Draga
   • Janusz Morawiec

   OriginalPaper Open access 30 March 2018 Pages: 21 - 35

4. On the invariance equation for two-variable weighted nonsymmetric Bajraktarević means

   • Zsolt Páles
   • Amr Zakaria

   OriginalPaper 11 May 2018 Pages: 37 - 57

5. Estimation, dependence and stability of solutions of an iterative equation

   • Kit Ian Kou
   • Xiao Tang
   • Weinian Zhang

   OriginalPaper 25 April 2018 Pages: 59 - 77

6. Functions generating (m,M,\(\varvec{\Psi }\))-Schur-convex sums

   • Silvestru Sever Dragomir
   • Kazimierz Nikodem

   OriginalPaper Open access 30 May 2018 Pages: 79 - 90

7. On a problem of Janusz Matkowski and Jacek Wesołowski, II

   • Janusz Morawiec
   • Thomas Zürcher

   OriginalPaper Open access 08 February 2019 Pages: 91 - 108

8. Iterated joining means

   • Justyna Jarczyk

   OriginalPaper Open access 18 August 2018 Pages: 109 - 120

9. Local approach to monotonicity properties in \(\psi \)-direct sums of Köthe spaces

   • Ryszard Płuciennik

   OriginalPaper 21 July 2018 Pages: 121 - 135

10. On a functional equation related to a problem of G. Derfel

    • Mariusz Sudzik

    OriginalPaper Open access 05 September 2018 Pages: 137 - 148

11. The geometric rate of convergence of random iteration in the Hutchinson distance

    • Rafał Kapica

    OriginalPaper Open access 03 November 2018 Pages: 149 - 160

12. On a quadratic difference assuming three values

    • Gian Luigi Forti

    OriginalPaper 13 August 2018 Pages: 161 - 203

13. On multiplicatively-additive iteration groups

    • Marek Cezary Zdun

    OriginalPaper Open access 26 November 2018 Pages: 205 - 215

14. Extension problem for principles of equivalent utility

    • Jacek Chudziak

    OriginalPaper Open access 14 February 2019 Pages: 217 - 238

15. Simultaneous difference equations on a restricted domain

    • Witold Jarczyk
    • Paweł Pasteczka

    OriginalPaper Open access 17 November 2018 Pages: 239 - 246

16. A characterization of additive iterative roots of identity with respect to invariant subspaces

    • Wojciech Jabłoński

    OriginalPaper Open access 20 October 2018 Pages: 247 - 255

17. Vector valued Banach limits and generalizations applied to the inhomogeneous Cauchy equation

    • Wolfgang Prager
    • Jens Schwaiger

    OriginalPaper Open access 28 July 2018 Pages: 257 - 275

18. Two refinements of Frink’s metrization theorem and fixed point results for Lipschitzian mappings on quasimetric spaces

    • Katarzyna Chrząszcz
    • Jacek Jachymski
    • Filip Turoboś

    OriginalPaper Open access 27 August 2018 Pages: 277 - 297

19. On an alternative d’Alembert’s equation

    • Roman Ger

    OriginalPaper Open access 09 November 2018 Pages: 299 - 309

20. Geometric properties of F-normed Orlicz spaces

    • Yunan Cui
    • Henryk Hudzik
    • Paweł Kolwicz

    OriginalPaper Open access 09 November 2018 Pages: 311 - 343