1. On amalgamation of reducts of polyadic algebras

   • Tarek Sayed Ahmed

   Original Paper Pages: 301 - 359

2. Endoprimality without duality

   • K. Kaarli
   • H. A. Priestley

   Original Paper Pages: 361 - 372

3. Injectives in residuated algebras

   • Hector Freytes

   Original Paper Pages: 373 - 393

4. A characterization of k-normal varieties

   • K. Denecke
   • S. L. Wismath

   Original Paper Pages: 395 - 409

5. On Compactness of Frames

   • Themba Dube

   Original Paper Pages: 411 - 417

6. Congruence-preserving functions on Stone and Kleene algebras

   • Vladimir Kuchmei
   • Miroslav Ploščica

   Original Paper Pages: 419 - 434

7. The Berman conjecture is true for nilpotent extensions of regular semigroups

   • Igor Dolinka
   • Petar Marković

   Mailbox Pages: 435 - 438

8. The complexity of checking identities for finite matrix rings

   • Csaba Szabó
   • Vera Vértesi

   Mailbox Pages: 439 - 445