1. Semigroup rings

   • J. S. Ponizovskiî

   Survey Article Pages: 1 - 46

2. Quasi-orthodox semigroups with inverse transversals

   • Tatsuhiko Saito

   Research Article Pages: 47 - 54

3. Completions and injective hulls of e-reflexive inverse semigroups

   • Kunitaka Shoji

   Research Article Pages: 55 - 68

4. Regular semigroups with a medial idempotent

   • M. Loganathan

   Research Article Pages: 69 - 74

5. Using automated reasoning tools: A study of the semigroupF ₂ B ₂

   • Ewing Lusk
   • Robert McFadden

   Research Article Pages: 75 - 87

6. Constructing inverse monoids from small categories

   • Jonathan Leech

   Research Article Pages: 89 - 116

7. A random walk for the solution sought: Remarks on the difference scheme approach to nonlinear semigroups and evolution operators

   • M. A. Freedman

   Research Article Pages: 117 - 126

8. Unification in varieties of idempotent semigroups

   • Franz Baader

   Research Article Pages: 127 - 145

9. Maximal prefix products

   • Véronique Bruyere

   Research Article Pages: 147 - 157

10. A note on f-disjunctive languages

    • C. M. Reis

    Research Article Pages: 159 - 165

11. Factorizable semigroups

    • Francesco Catino

    Research Article Pages: 167 - 174

12. Noble inverse semigroups with bisimple core

    • Boris M. Schein

    Research Article Pages: 175 - 178

13. Structure of ordered semirings

    • M. Satyanarayana

    Research Article Pages: 179 - 188

14. Hausdorff topologies on the α-bicyclic semigroup

    • J. W. Hogan

    Research Article Pages: 189 - 209

15. Differentiable monoids with smooth boundary

    • J. P. Holmes

    Research Article Pages: 211 - 222

16. Subprincipal closed ideals in βN

    • Dennis Davenport
    • Neil Hindman

    Research Article Pages: 223 - 245

17. In a left-topological semigroup with dense center the closure of any left ideal is an ideal

    • Wolfgang Ruppert

    Short Notes Pages: 247 - 247

18. Semigroups satisfying xy=yg(x,y)x

    • S. K. Stein

    Short Notes Pages: 249 - 251

19. On varieties of completely regular semigroups II

    • Libor Polák

    Research Article Pages: 253 - 284

20. Monoids characterized by their quasi-injective s-systems

    • J. Ahsan

    Research Article Pages: 285 - 292

21. On equalizer-flat and pullback-flat acts

    • Peeter Normak

    Research Article Pages: 293 - 313

22. On the uniqueness of the coefficient ring in a semigroup ring

    • Eugene Spiegel

    Research Article Pages: 315 - 322

23. Monoides et semi-anneaux complets

    • Daniel Krob

    Research Article Pages: 323 - 339

24. On semigroups with least generating sets

    • Reinhard Thron
    • Dietmar Kittler

    Research Article Pages: 341 - 350

25. The congruences on S(X) which commute with V

    • W. Barit
    • K. D. Magill Jr.
    • S. Subbiah

    Research Article Pages: 351 - 364

26. Connected algebraic monoids

    • Lex E. Renner

    Short Notes Pages: 365 - 369

27. Some conditions under which A continuous semigroup morphism is strongly differentiable

    • Jane M. Day
    • Donald D. Weddington

    Short Notes Pages: 371 - 373

28. Colloquium on the algebraic theory of semigroups and its applications

    Report Pages: 375 - 375