1. Quasiorder lattices in congruence modular varieties

   • Gergő Gyenizse

   OriginalPaper 01 June 2020 Pages: 3 - 10

2. Distribution and generalized centre in planar nearrings

   • Tim Boykett

   OriginalPaper 01 June 2020 Pages: 11 - 29

3. Graph quasivarieties

   • Erkko Lehtonen
   • Reinhard Pöschel

   OriginalPaper 01 June 2020 Pages: 31 - 50

4. Derivations of group rings

   • Orest D. Artemovych
   • Victor A. Bovdi
   • Mohamed A. Salim

   OriginalPaper 01 June 2020 Pages: 51 - 72

5. The equal–sum–free subset problem

   • Gábor Bacsó
   • Zsolt Tuza

   OriginalPaper 01 June 2020 Pages: 73 - 79

6. Zilber’s Theorem for planar lattices, revisited

   • Kirby A. Baker
   • George Grätzer

   OriginalPaper 15 December 2020 Pages: 81 - 104

7. Representations of ∗-regular rings and their ortholattices of projections

   • Christian Herrmann
   • Niklas Niemann

   OriginalPaper 01 June 2020 Pages: 105 - 115

8. Planar semilattices and nearlattices with eighty-three subnearlattices

   • Gábor Czédli

   OriginalPaper 01 June 2020 Pages: 117 - 165

9. Multiparameter Abelian ergodic theorems of Chacon–Báez–Duarte type

   • Takeshi Yoshimoto

   OriginalPaper 01 June 2020 Pages: 167 - 182

10. The Picard groups for unital inclusions of unital C*-algebras

    • Kazunori Kodaka

    OriginalPaper 01 June 2020 Pages: 183 - 207

11. Weighted composition operators acting from the Lipschitz space to the space of bounded functions on a tree

    • Takuya Hosokawa

    OriginalPaper 01 June 2020 Pages: 209 - 224

12. The range of the Radon transform on the real hyperbolic Grassmann manifold

    • Satoshi Ishikawa

    OriginalPaper 01 June 2020 Pages: 225 - 264

13. Best proximity version of Krasnoselskii’s fixed point theorem

    • S. Kar
    • P. Veeramani

    OriginalPaper 01 June 2020 Pages: 265 - 271

14. On a generalization of Ando’s dilation theorem

    • N. Mallick
    • K. Sumesh

    OriginalPaper 01 June 2020 Pages: 273 - 286

15. On the divergence of double Fourier–Walsh–Paley series of continuous functions

    • Rostom Getsadze

    OriginalPaper 01 June 2020 Pages: 287 - 302

16. Nonstationary multiresolution analysis on local fields of prime characteristic

    • M. Younus Bhat

    OriginalPaper 01 June 2020 Pages: 303 - 320

17. New inequalities for Holmes–Thompson and Busemann measures

    • Horst Martini
    • Zokhrab Mustafaev

    OriginalPaper 01 June 2020 Pages: 321 - 330

18. Weighted shift operators, orthogonal polynomials and chain sequences

    • Rupert Lasser
    • Josef Obermaier

    OriginalPaper 01 June 2020 Pages: 331 - 342