1. Aldo De Luca 1941–2018

   • Clelia De Felice
   • Dominique Perrin
   • Antonio Restivo

   Obituary 17 June 2019 Pages: 205 - 213

   

2. \(\infty \)-Constructible subsemigroups of \(M_2(\mathbb {C})\)

   • Yatir Halevi

   RESEARCH ARTICLE 25 October 2018 Pages: 214 - 232

3. Structure of the Eberlein compactification of locally compact Heisenberg type group \(\mathbb {Z}\times \mathbb {T} \times \mathbb {T}\)

   • Elcim Elgun

   Research Article 19 September 2018 Pages: 233 - 244

4. Generation of semigroup for symmetric matrix Schrödinger operators in \({\varvec{L}}^{\varvec{p}}\)-spaces

   • A. Maichine

   Research Article 16 July 2018 Pages: 245 - 259

5. \(\aleph _0\)-categoricity of semigroups

   • Victoria Gould
   • Thomas Quinn-Gregson

   Research Article Open access 29 January 2019 Pages: 260 - 292

6. A novel algebraic characteristic of fractional resolvent families

   • Jie Mei
   • Chuang Chen
   • Miao Li

   Research Article 05 October 2018 Pages: 293 - 302

7. Some characterizations of the tensor product of complete lattices with applications to quantales

   • Javier Gutiérrez García
   • Ulrich Höhle
   • Tomasz Kubiak

   Research Article 17 September 2018 Pages: 303 - 316

8. Factorizations of polynomials with integral non-negative coefficients

   • Federico Campanini
   • Alberto Facchini

   Research Article 30 October 2018 Pages: 317 - 332

9. Endomorphisms of semigroups of order-preserving partial transformations

   • Vítor H. Fernandes
   • Paulo G. Santos

   Research Article 14 June 2018 Pages: 333 - 344

10. Rees coextensions of finite tomonoids and free pomonoids

    • Milan Petrík
    • Thomas Vetterlein

    Research Article Open access 28 September 2018 Pages: 345 - 367

    

11. A cancellativity criterion for presented monoids

    • Patrick Dehornoy

    Research Article 04 October 2018 Pages: 368 - 390

    

12. On finite presentations of inverse semigroups with zero having polynomial growth

    • L. M. Shneerson
    • D. Easdown

    Research Article 26 February 2019 Pages: 391 - 446

    

13. Gröbner basis and the automaton property of Hecke–Kiselman algebras

    • Arkadiusz Mȩcel
    • Jan Okniński

    Research Article Open access 30 May 2019 Pages: 447 - 464

    

14. A new approach to a network of congruences on an inverse semigroup

    • Ying-Ying Feng
    • Li-Min Wang
    • Hai-Yuan Huang

    Research Article 14 March 2019 Pages: 465 - 480

    

15. Irreducible generalized numerical semigroups and uniqueness of the Frobenius element

    • Carmelo Cisto
    • Gioia Failla
    • Rosanna Utano

    Research Article 24 July 2019 Pages: 481 - 495

    

16. Tempered monoids of real numbers, the golden fractal monoid, and the well-tempered harmonic semigroup

    • Maria Bras-Amorós

    Research Article 30 September 2019 Pages: 496 - 516

    

17. Idempotent-fixing automorphisms of completely regular semigroups

    • Primož Moravec

    Short Note 25 June 2018 Pages: 517 - 521

18. Correction to: Flat coset decompositions of skew lattices

    • João Pita Costa
    • Karin Cvetko-Vah

    Correction 12 August 2019 Pages: 522 - 523