The Frobenius problem for numerical semigroups generated by sequences of the form \(ca^n-d\) Fabián AriasJerson BorjaCalixto Rhenals RESEARCH ARTICLE 02 October 2023 Pages: 581 - 608
The local bisection hypothesis for twisted groupoid C*-algebras Becky ArmstrongJonathan H. BrownJacqui Ramagge RESEARCH ARTICLE Open access 17 October 2023 Pages: 609 - 623
Moment functions of higher rank on some types of hypergroups Żywilla FechnerEszter GselmannLászló Székelyhidi RESEARCH ARTICLE Open access 11 December 2023 Pages: 624 - 636
An extension to “A subsemigroup of the rook monoid” George FikiorisGiannis Fikioris RESEARCH ARTICLE Open access 19 October 2023 Pages: 637 - 650
Formations of orthodox semigroups Gracinda M. S. GomesAna-Catarina C. Monteiro RESEARCH ARTICLE 08 November 2023 Pages: 651 - 679
Normal subsemigroups of finite transformation semigroups Janusz Konieczny RESEARCH ARTICLE 25 September 2023 Pages: 680 - 691
On the structure of semigroups whose regular elements are completely regular Xavier Mary RESEARCH ARTICLE 08 November 2023 Pages: 692 - 717
Joint continuity in semitopological monoids and semilattices Alexander V. OsipovKonstantin Kazachenko RESEARCH ARTICLE 04 December 2023 Pages: 718 - 731
Limit varieties generated by finite non-J-trivial aperiodic monoids Olga B. Sapir RESEARCH ARTICLE 04 December 2023 Pages: 732 - 750
Ehresmann–Schein–Nambooripad theorems for classes of biunary semigroups Tim Stokes RESEARCH ARTICLE Open access 20 September 2023 Pages: 751 - 779
Homeomorphism groups on the positive real numbers defined by binary operations Sin-Ei Takahasi RESEARCH ARTICLE 08 November 2023 Pages: 780 - 791