In memoriam: Klaus Keimel (1939–2017) Karl HofmannJimmie Lawson OBITUARY 05 March 2018 Pages: 199 - 202
Inverse semigroup shifts over countable alphabets Daniel GonçalvesMarcelo SobottkaCharles Starling Research Article 06 July 2017 Pages: 203 - 240
Nonuniform exponential dichotomy for linear skew-product semiflows over semiflows Ciprian PredaOana Romina Onofrei Research Article 27 March 2017 Pages: 241 - 252
Semigroups of rectangular matrices under a sandwich operation Igor DolinkaJames East Research Article 30 May 2017 Pages: 253 - 300
A solvable conjugacy problem for finitely presented semigroups satisfying C(2) and T(4) P. A. CummingsD. A. Jackson Research Article 10 April 2017 Pages: 301 - 315
Algebraic properties of Zappa–Szép products of semigroups and monoids Rida-e Zenab Research Article Open access 23 May 2017 Pages: 316 - 332
Perturbations of positive semigroups on AM-spaces András BátkaiBirgit JacobJens Wintermayr Research Article 20 June 2017 Pages: 333 - 347
On pseudo-amenability of commutative semigroup algebras and their second duals M. SoroushmehrM. RostamiM. Essmaili Research Article 05 July 2017 Pages: 348 - 356
Stabilization of the wave equation with acoustic and delay boundary conditions Gilbert R. Peralta Research Article 19 March 2018 Pages: 357 - 376
Left and right negatively orderable semigroups and a one-sided version of Simon’s theorem Zsófia Juhász Research Article 16 January 2018 Pages: 377 - 395
An extension of Wilf’s conjecture to affine semigroups J. I. García-GarcíaD. Marín-AragónA. Vigneron-Tenorio Research Article 15 November 2017 Pages: 396 - 408
The variety of commutative additively and multiplicatively idempotent semirings Ivan ChajdaHelmut Länger RESEARCH ARTICLE Open access 17 November 2017 Pages: 409 - 415
