1. On retractable sets and the fixed point property

   • B. S. W. Schröder

   OriginalPaper Pages: 149 - 158

2. n-Permutable varieties satisfy non trivial congruence identities

   • P. Lipparini

   OriginalPaper Pages: 159 - 168

3. On the subalgebra lattice of Peano algebras with finitary and infinitary operations

   • K. -H. Diener

   OriginalPaper Pages: 169 - 185

4. The semigroup of not bijective finite selfmaps of an infinite set

   • I. Fleischer

   OriginalPaper Pages: 186 - 190

5. An identity for subgroup lattices of Abelian groups

   • P. P. Pálfy
   • Cs. Szabó

   OriginalPaper Pages: 191 - 195

6. An operation related to the Cantor-Bendixson derivative

   • A. Touraille

   OriginalPaper Pages: 196 - 206

7. Lower bound on the size of weak bases in lattices

   • Z. Lengvárszky

   OriginalPaper Pages: 207 - 208

8. Weak distributive laws and their role in free lattices

   • J. Reinhold

   OriginalPaper Pages: 209 - 215

9. Monotone Jónsson operations and near unanimity functions

   • L. Zádori

   OriginalPaper Pages: 216 - 236

10. If a polynomial identity guarantees that every partial order on a ring can be extended, then this identity is true only for a zero-ring

    • V. Kreinovich

    OriginalPaper Pages: 237 - 242

11. Complementing lattice-ordered groups: The finite-valued case

    • J. Martinez

    OriginalPaper Pages: 243 - 253

12. Directoids and directed groups

    • B. J. Gardner
    • M. M. Parmenter

    OriginalPaper Pages: 254 - 273