1. A survey of Schreier-type extensions of monoids

   • Peter F. Faul

   Survey 21 March 2022 Pages: 519 - 539

2. Permutability of matrices over bipotent semirings

   • Thomas Aird
   • Mark Kambites

   Research Article Open access 24 March 2022 Pages: 540 - 560

3. Abstract differential equations and Caputo fractional derivative

   • P. M. Carvalho-Neto

   Research Article 05 April 2022 Pages: 561 - 583

   

4. Near-ring congruences on seminearrings

   • Kamalika Chakraborty
   • Rajlaxmi Mukherjee
   • Sujit Kumar Sardar

   Research Article 04 January 2022 Pages: 584 - 593

5. Levi-Civita functional equations and the status of spectral synthesis on semigroups-II

   • Bruce Ebanks
   • Che Tat Ng

   Research Article 28 January 2022 Pages: 594 - 617

6. Topological properties of the binary supremum function

   • Peter Hertling

   Research Article Open access 23 February 2022 Pages: 618 - 646

   

7. Constructions of free dibands and tribands

   • Juwei Huang
   • Yuxiu Bai
   • Zerui Zhang

   Research Article 25 March 2022 Pages: 647 - 666

8. A monoid structure on the set of all binary operations over a fixed set

   • Sergio R. López-Permouth
   • Isaac Owusu-Mensah
   • Asiyeh Rafieipour

   Research Article 13 May 2022 Pages: 667 - 688

9. Mid-reversibility properties of semigroup actions on homogeneous spaces

   • Ronan A. Reis
   • Luiz A. B. San Martin
   • Victor H. L. Rocha

   Research Article 19 April 2022 Pages: 689 - 703

10. Distribution of genus among numerical semigroups with fixed Frobenius number

    • Deepesh Singhal

    Research Article Open access 16 May 2022 Pages: 704 - 723

    

11. On the structure of cancellative conjugation semigroups

    • Mária B. Szendrei

    Research Article 06 May 2022 Pages: 724 - 730

12. An Ehresmann-Schein-Nambooripad type theorem for DRC-semigroups

    • Shoufeng Wang

    Research Article 09 May 2022 Pages: 731 - 757

13. Comments on “Semigroups of transformations whose restrictions belong to a given semigroup”

    • Mosarof Sarkar
    • Shubh N. Singh

    Short Note 28 April 2022 Pages: 758 - 759

14. Independence of axioms of an associative trioid

    • Anatolii V. Zhuchok

    Short Note 11 April 2022 Pages: 760 - 765

15. Correction to: A simple proof of a multidimensional Borg–Levinson type theorem

    • Mourad Choulli

    Correction 30 March 2022 Pages: 766 - 772