1. Regular algebraic monoids

   • Lex E. Renner

   Research Article Pages: 107 - 113

2. Trotter’s formula for transition semigroups

   • G. Tessitore
   • J. Zabczyk

   Research Article Pages: 114 - 126

3. On multiplicative perturbations of C ₀ -groups and C ₀ -cosine operator functions

   • C. Palencia
   • S. Piskarev

   Research Article Pages: 127 - 152

4. On the invertibility and bounded extension of C ₀ -semigroups

   • Hans Zwart

   Research Article Pages: 153 - 160

5. Tensor products and preservation of limits, for acts over monoids

   • S. Bulman-Fleming
   • V. Laan

   Research Article Pages: 161 - 179

6. Bands of weakly r-Archimedean ordered semigroups

   • Xiang-Yun Xie

   Research Article Pages: 180 - 190

7. The existence of disjoint smallest ideals in the two natural products on β S

   • Shea D. Burns

   Research Article Pages: 191 - 201

8. Star-operations on semigroups

   • Myeong Og Kim
   • Dong Je Kwak
   • Young Soo Park

   Research Article Pages: 202 - 222

9. Regular semigroups with (REP) and (REP) ^op are not necessarily amalgamation bases

   • Kunitaka Shoji

   Research Article Pages: 223 - 236

10. On comparing two chains of numerical semigroups and detecting arf semigroups

    • David E. Dobbs
    • Gretchen L. Matthews

    Research Article Pages: 237 - 246

11. Graph products of monoids

    • António Veloso da Costa

    Research Article Pages: 247 - 277

12. One-parameter semigroups for linear evolution equations

    • Klaus-Jochen Engel
    • Rainer Nagel

    BookReview Pages: 278 - 280