1. Marie-Louise Dubreil-Jacotin, 1905–1972

   • L. Lesieur

   Announcement 01 December 1973 Pages: 1 - 2

2. Weakly self-injective semilattices

   • C. S. Johnson Jr.
   • F. R. McMorris

   Research Announcements 01 December 1973 Pages: 3 - 11

3. Semilattice decompositions of semigroups

   • Mohan S. Putcha

   OriginalPaper 01 December 1973 Pages: 12 - 34

4. Commutative semigroups whose proper subsemigroups are power joined

   • Thomas E. Nordahl

   OriginalPaper 01 December 1973 Pages: 35 - 41

5. A characterization of a class of semigroups

   • Frank Knowles

   OriginalPaper 01 December 1973 Pages: 42 - 49

6. Endomorphism monoids of acts over monoids

   • Ulrich Knauer
   • Alexander V. Mikhalev

   Research Articles 01 December 1973 Pages: 50 - 58

7. Categorical semigroups

   • R. A. R. Monzo

   OriginalPaper 01 December 1973 Pages: 59 - 68

8. A study of operands in terms of maximal generalized orbits

   • William R. Nico

   OriginalPaper 01 December 1973 Pages: 69 - 74

9. Bands of unipotent monoids

   • B. M. Schein

   OriginalPaper 01 December 1973 Pages: 75 - 79

10. On distributive residuated groupoids

    • Jules C. Varlet

    OriginalPaper 01 December 1973 Pages: 80 - 85

11. The bohr compactification of a dense ideal in a topological semigroup

    • J. A. Hildebrant
    • J. D. Lawson

    OriginalPaper 01 December 1973 Pages: 86 - 92

12. Another proof of a theorem of evans

    • Saraswathi Subbiah

    Short Notes 01 December 1973 Pages: 93 - 94

13. Полугущы ранга ї

    • В. В. Деменчук

    Research Articles 01 December 1973 Pages: 95 - 99

14. Classes de semigroupes immersibles dans des groupes

    • N. Bouleau

    OriginalPaper 01 December 1973 Pages: 100 - 112

15. Orthodox semigroups whose idempotents satisfy a certain identity

    • Miyuki Yamada

    OriginalPaper 01 December 1973 Pages: 113 - 128

16. Note on quasi-inverse semigroups

    • Tôru Saitô

    OriginalPaper 01 December 1973 Pages: 129 - 132

17. The rees theorem for locally compact semigroups

    • W. S. Owen

    OriginalPaper 01 December 1973 Pages: 133 - 152

18. Extensions of homomorphisms to dense extensions of semigroups

    • Norman R. Reilly

    OriginalPaper 01 December 1973 Pages: 153 - 170

19. Demi-groupes prelibres

    • J. C. Spehner

    OriginalPaper 01 December 1973 Pages: 171 - 179

20. Note on a certain class of orthodox semigroups

    • Miyuki Yamada

    Research Announcements 01 December 1973 Pages: 180 - 188

21. On semigroups admitting ring structure II

    • M. Satyanarayana

    Research Articles 01 December 1973 Pages: 189 - 197

22. A type of product for uniform semilattices

    • John B. Hickey

    OriginalPaper 01 December 1973 Pages: 198 - 215

23. T _X is absolutely closed

    • H. E. Scheiblich
    • Kayran C. Moore

    OriginalPaper 01 December 1973 Pages: 216 - 226

24. The syntactic monoid of a hypercode

    • G. Thierrin

    OriginalPaper 01 December 1973 Pages: 227 - 231

25. Band of t-archimedean semigroups

    • Mohan S. Putcha

    OriginalPaper 01 December 1973 Pages: 232 - 239

26. Representations of inverse semigroups by one-to-one partial transformations of a set

    • G. B. Preston

    OriginalPaper 01 December 1973 Pages: 240 - 245

27. A characterization ofR-classes of semigroups as partial groupoids

    • A. H. Clifford
    • T. E. Hall

    OriginalPaper 01 December 1973 Pages: 246 - 254

28. Homomorphisms of free contents

    • John Shafer

    Research Announcements 01 December 1973 Pages: 255 - 259

29. Schützenberger groups ofH-classes in the semigroup of all binary relations on a set

    • G. B. Preston

    Short Notes 01 December 1973 Pages: 260 - 262

30. The partially ordered set of allJ-classes of a finite semigroup

    • T. E. Hall

    OriginalPaper 01 December 1973 Pages: 263 - 264

31. Problems on compact semilattices

    • D. R. Brown
    • A. R. Stralka

    Research Problems 01 December 1973 Pages: 265 - 270

32. Symposium on Inverse Semigroups and their Generalizations

    Announcements 01 December 1973 Pages: 271 - 272

33. Lee W. Anderson 1926–1973

    • R. P. Hunter

    Obituary 01 December 1973 Pages: 273 - 281

34. Abstract

    • Grillet P.

    Abstract 01 December 1973 Pages: 282 - 282

35. Applications of semigroup algebras to ideal extensions of semigroups

    • Mohan S. Putcha
    • Julian Weissglass

    Research Articles 01 December 1973 Pages: 283 - 294

36. The dual ordinal of a bisimple inverse semigroup

    • G. L. White

    OriginalPaper 01 December 1973 Pages: 295 - 297

37. Bisimple semigroups with idempotents well-ordered

    • J. W. Hogan

    OriginalPaper 01 December 1973 Pages: 298 - 316

38. On left cancellative semigroups

    • M. Satyanarayana

    OriginalPaper 01 December 1973 Pages: 317 - 329

39. Non-isomorphic semigroups with isomorphic semigroups of subsets

    • E. M. Mogiljanskaja

    OriginalPaper 01 December 1973 Pages: 330 - 333

40. Commutative monoids all of whose principal ideals are projective

    • Mati Kilp

    OriginalPaper 01 December 1973 Pages: 334 - 339

41. The weakly almost periodic compactification: Another approach

    • Paul Milnes

    OriginalPaper 01 December 1973 Pages: 340 - 345

42. Semigroups with midunits

    • Janet E. Ault

    Research Announcements 01 December 1973 Pages: 346 - 351

43. Partially ordered, primitive regular semigroups

    • Jurgen Rompke

    OriginalPaper 01 December 1973 Pages: 352 - 359

44. No semigroup is a finite union of mutants

    • Jin Bai Kim

    Short Notes 01 December 1973 Pages: 360 - 361

45. A note on the Bohr compactification

    • M. Friedberg
    • J. W. Stepp

    OriginalPaper 01 December 1973 Pages: 362 - 364

46. On a centralizer result of Hunter's

    • Karl Heinrich Hofmann
    • Robert P. Hunter

    OriginalPaper 01 December 1973 Pages: 365 - 372

47. Editorial note

    EditorialNotes 01 December 1973 Pages: 373 - 373

48. Abstract

    Abstract 01 December 1973 Pages: 374 - 374